Relevant bibliographies by topics / Crack Propagation (Material Science)

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Crack Propagation (Material Science)'

Author: Grafiati
Published: 4 June 2021
Last updated: 6 September 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Crack Propagation (Material Science).'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Crack Propagation (Material Science)"

1

Bi, Yueqi, Xiaoming Yuan, Mingrui Hao, Shuai Wang, and He Xue. "Numerical Investigation of the Influence of Ultimate-Strength Heterogeneity on Crack Propagation and Fracture Toughness in Welded Joints." Materials 15, no. 11 (May 27, 2022): 3814. http://dx.doi.org/10.3390/ma15113814.

Full text
Abstract:
The mechanical properties of dissimilar metal-welded joint materials are heterogeneous, which is an obstacle to the safety evaluation of key welded structures. The variation of stress–strain conditions at the crack tip caused by mismatch of material mechanical properties in dissimilar metal-welded joints is an important factor affecting crack propagation behavior. To understand the influence of uneven distribution of ultimate strength of the base metal and the welded metal on the crack propagation path, fracture toughness, as well as the mechanical field at the crack tip in the small-scale yield range, the user-defined field variable subroutine method is used to express continuous variation characteristics of welded joint ultimate strength in finite element software. In addition, the J-integral during crack propagation is calculated, and the effect of the ultimate strength on the J-integral and the stress field at the crack tip are analyzed. The results show that as the crack propagation direction is perpendicular to the direction of ultimate strength, the gradient of ultimate strength increases from |Gy|= 50 to |Gy|= 100 MPa/mm, the crack deflection angle increases by 0.018%, and the crack length increases by 1.46%. The fracture toughness of the material decreased slightly during crack propagation. Under the condition that the crack propagation direction is the same as the direction of ultimate strength, the crack propagation path is a straight line. As the gradient of ultimate strength increases from Gx = 50 to Gx = 100 MPa/mm, the crack propagation length decreases by 5.17%, and the slope of fracture toughness curve increases by 51.63%. On the contrary, as the crack propagates to the low ultimate strength side, the crack propagation resistance decreases, the ultimate strength gradient increases from Gx = −100 to Gx = −50 MPa/mm, and the slope of the fracture toughness curve decreases by 51.01%. It is suggested to consider the relationship between crack growth behavior and ultimate strength when designing and evaluating the structural integrity of cracks at the material interface of dissimilar metal-welded joints.
APA, Harvard, Vancouver, ISO, and other styles
2

Yang, Fu-qiang, He Xue, Ling-yan Zhao, and Xiu-rong Fang. "Effects of Welded Mechanical Heterogeneity on Interface Crack Propagation in Dissimilar Weld Joints." Advances in Materials Science and Engineering 2019 (February 3, 2019): 1–10. http://dx.doi.org/10.1155/2019/6593982.

Full text
Abstract:
The stress and strain status associated with the material properties is one of the main factors affecting stress corrosion cracking (SCC) of structural components in nuclear power plants (NPPs). In many SCC prediction models, the stress intensity factor calculated with homogeneous materials is used to characterize the crack tip stress state. However, the mechanical and material properties in weld joints are heterogeneous, which will produce the discontinuous distribution of stress and strain nearby crack tip and affect the crack propagation. To understand the material mechanical heterogeneity effects on interface crack propagation, the specimens with ultimate tensile strength mismatch and elastic modulus mismatch were studied by using an extended finite element method (XFEM). The results indicate that the interface crack extension is easy to occur in the specimens with larger ultimate tensile strength mismatch, while the elastic modulus mismatch has little effects on crack extension. The different interface cracks in the dissimilar metal weld joints of the reactor pressure vessel used in NPPs tend to deviate from the initial direction into alloy 182, and the interface crack propagation path fluctuation is small.
APA, Harvard, Vancouver, ISO, and other styles
3

Han, Du, Hongwei Fan, Chengzeng Yan, Tie Wang, Yu Yang, Sajid Ali, and Gang Wang. "Heat Conduction and Cracking of Functionally Graded Materials Using an FDEM-Based Thermo-Mechanical Coupling Model." Applied Sciences 12, no. 23 (November 30, 2022): 12279. http://dx.doi.org/10.3390/app122312279.

Full text
Abstract:
In this paper, the steady-state and transient heat transfer processes of functionally graded materials (FGMs) are analyzed using a coupled thermo-mechanical model in a GPU parallel multiphysics finite–discrete element software, namely MultiFracS. First, the coupled model to handle the heat transfer problem of heterogeneous materials is verified. Then, the advantages and disadvantages of FGMs and composite materials in response to thermal shock loads are compared and the results indicate that FGMs can overcome extreme environments better than composite materials. Finally, the influence of the geometric distribution characteristics of the double-edge cracks in the gradient material plate on the crack propagation is analyzed. The simulation results show that the interaction between the cracks affects the crack propagation path under the thermal load. The inclination angle and spacing of double-edge cracks greatly influence crack propagation. Specifically, a larger inclination angle and spacing can lead to a smaller crack propagation angle. The approach in this paper provides a new quantitative tool for investigating the thermal, elastic, and cracking of functionally graded materials.
APA, Harvard, Vancouver, ISO, and other styles
4

Li, Tong, Zhenting Yang, Chenghui Xu, Xinsheng Xu, and Zhenhuan Zhou. "A Phase Field Approach to Two-Dimensional Quasicrystals with Mixed Mode Cracks." Materials 16, no. 10 (May 9, 2023): 3628. http://dx.doi.org/10.3390/ma16103628.

Full text
Abstract:
Quasicrystals (QCs) are representatives of a novel kind of material exhibiting a large number of remarkable specific properties. However, QCs are usually brittle, and crack propagation inevitably occurs in such materials. Therefore, it is of great significance to study the crack growth behaviors in QCs. In this work, the crack propagation of two-dimensional (2D) decagonal QCs is investigated by a fracture phase field method. In this method, a phase field variable is introduced to evaluate the damage of QCs near the crack. Thus, the crack topology is described by the phase field variable and its gradient. In this manner, it is unnecessary to track the crack tip, and therefore remeshing is avoided during the crack propagation. In the numerical examples, the crack propagation paths of 2D QCs are simulated by the proposed method, and the effects of the phason field on the crack growth behaviors of QCs are studied in detail. Furthermore, the interaction of the double cracks in QCs is also discussed.
APA, Harvard, Vancouver, ISO, and other styles
5

Liu, Taoying, Mengyuan Cui, Qing Li, Shan Yang, Zhanfu Yu, Yeshan Sheng, Ping Cao, and Keping Zhou. "Fracture and Damage Evolution of Multiple-Fractured Rock-like Material Subjected to Compression." Materials 15, no. 12 (June 18, 2022): 4326. http://dx.doi.org/10.3390/ma15124326.

Full text
Abstract:
Multiple compression tests on rock-like samples of pre-existing cracks with different geometries were conducted to investigate the strength properties and crack propagation behavior considering multi-crack interactions. The progressive failure process of the specimens was segmented into four categories and seven coalescence modes were identified due to different crack propagation mechanisms. Ultimately, a mechanical model of the multi-crack rock mass was proposed to investigate the gradual fracture and damage evolution traits of the multi-crack rock on the basis of exploring the law of the compression-shear wing crack initiation and propagation. A comparison between theory and experimental results indicated that the peak strength of the specimens with multiple fractures decreased initially and subsequently increased with the increase in the fissure inclination angles; the peak strength of specimens decreased with the increase in the density of fissure distribution.
APA, Harvard, Vancouver, ISO, and other styles
6

Gao, Ruipeng, Mengmeng Liu, Bing Wang, Yiran Wang, and Wei Shao. "Influence of Stress Intensity Factor on Rail Fatigue Crack Propagation by Finite Element Method." Materials 14, no. 19 (September 30, 2021): 5720. http://dx.doi.org/10.3390/ma14195720.

Full text
Abstract:
Wheel rail rolling contact fatigue is a very common form of damage, which can lead to uneven rail treads, railhead nuclear damage, etc. Therefore, ANSYS software was used to establish a three-dimensional wheel–rail contact model and analyze the effects of several main characteristics, such as the rail crack length and crack propagation angle, on the fatigue crack intensity factor during crack propagation. The main findings were as follows: (1) With the rail crack length increasing, the position where the crack propagated by mode I moved from the inner edge of the wheel–rail contact spot to the outer edge. When the crack propagated to 0.3–0.5 mm, it propagated to the rail surface, causing the rail material to peel or fall off and other damage. (2) When the crack propagation angle was less than 30°, the cracks were mainly mode II cracks. When the angle was between 30 and 70°, the cracks were mode I–II cracks. When the angle was more than 70°, the cracks were mainly mode I cracks. When the crack propagation angle was 60°, the equivalent stress intensity factor reached the maximum, and the rail cracks propagated the fastest.
APA, Harvard, Vancouver, ISO, and other styles
7

Smith, B. J., and A. R. Marder. "Corrosion-Fatigue (Circumferential) Cracking in Cr-Mo Low Alloy Boiler Tube Steels: Part 1—Initiation and Propagation." Journal of Engineering Materials and Technology 114, no. 3 (July 1, 1992): 265–69. http://dx.doi.org/10.1115/1.2904171.

Full text
Abstract:
The metallurgical mechanism responsible for the initiation and propagation of circumferentially oriented, fireside cracks on waterwall boiler tubes was investigated. The materials studied were Cr-Mo low alloy steels in the as-received and post-service (exhibited cracking) condition. It was determined that cracks were initiated by a corrosion/fatigue interactive mechanism at the fireside tube surface. The corrosion mechanism is sulfidation while the material fatigue degradation occurs due to thermal stress cycles. Crack propagation occurs by an environmentally assisted thermal fatigue crack propagation mechanism.
APA, Harvard, Vancouver, ISO, and other styles
8

Zhang, Yongpeng, Guangchun Xiao, Chonghai Xu, Tingting Zhou, Mingdong Yi, and Zhaoqiang Chen. "Cohesive Element Model for Fracture Behavior Analysis of Al2O3/Graphene Composite Ceramic Tool Material." Crystals 9, no. 12 (December 11, 2019): 669. http://dx.doi.org/10.3390/cryst9120669.

Full text
Abstract:
The microstructure model of Al2O3/graphene (AG) composite ceramic tool material is established based on Voronoi tessellation. The cohesive element method was used to simulate the crack growth of AG. The effect of cohesive parameters at the grain boundary of Al2O3 and graphene on the crack propagation was investigated. The results show that the grain strength of graphene is too high, the crack propagation to graphene grains will be hindered and cannot propagate forward. Cracks tend to spread along the paths where the crack propagation drive force was high and the resistance was low. When the interface strength between Al2O3 and graphene was at the weak interface, the crack propagation path and length were relatively straight and short. The average energy release rate G C is 1.042 × 10−3 J/m2, which is 2.4% higher than that of single-phase Al2O3 ceramic tool materials. However, if the interface strength between Al2O3 and graphene was at the strong interface, the crack propagated along graphene particles for a short distance, consuming a large amount of fracture energy. Furthermore, the crack will deflect around graphene grains, which increases the crack propagation length. The average energy release rate G C is 1.039 × 10−3 J/m2, which is 2% higher than that of single-phase Al2O3 ceramic tool materials.
APA, Harvard, Vancouver, ISO, and other styles
9

Wünsche, Michael, Jan Sladek, Vladimir Sladek, Chuanzeng Zhang, and Miroslav Repka. "Dynamic Wave Propagation in Fiber Reinforced Piezoelectric Composites with Cracks." International Journal of Computational Methods 16, no. 06 (May 27, 2019): 1840021. http://dx.doi.org/10.1142/s0219876218400212.

Full text
Abstract:
This paper presents the transient dynamic analysis of micro-cracks of arbitrary shape in two-dimensional, linear piezoelectric fiber reinforced composite materials. Interface cracks between fiber and matrix as well as cracks inside the matrix and fibers are investigated. For this purpose, a symmetric Galerkin time-domain boundary element method in conjunction with a multi-domain technique is developed. The time-domain fundamental solutions for linear piezoelectric materials are applied. The time discretization is performed by a collocation method. An explicit time-stepping scheme is obtained to compute the discrete boundary data including the generalized crack-opening-displacements (CODs). Iterative solution algorithms are implemented to solve the nonlinear semi-permeable electrical crack-face boundary conditions and for a crack-face contact analysis at time-steps when a physically unacceptable crack-face intersection occurs. Several numerical examples are presented to reveal the influences of the micro-cracks, the material combinations and the transient dynamic loading on the intensity factors and the scattered wave fields.
APA, Harvard, Vancouver, ISO, and other styles
10

Sohel, Shamsul Huda, Md Al Amin Hossain, Debashis Datta, and Md Fazlul Huq. "Probabilistic Assessment of Crack Failure of Reactor Pressure Vessel (RPV) Cladding Material." Journal of Bangladesh Academy of Sciences 41, no. 2 (January 29, 2018): 237–45. http://dx.doi.org/10.3329/jbas.v41i2.35501.

Full text
Abstract:
To design a Reactor Pressure Vessel (RPV), material property like crack must be considered as it is an unavoidable property of materials. Presence of crack in materials must be kept within limit to prevent material’s failure. So, crack propagation must be analyzed and observed. In this paper, crack propagation due to stress and materials fracture toughness of reactor pressure vessel cladding has been observed to estimate cumulative probability of crack failure using Probabilistic Fracture Mechanics (PFM). Average crack size is guessed as 3 mm and geometry factor is considered as 1.12 to analyze edge crack. Final crack analysis range has been found to be 1.8 mm with crack propagation rate of ± 30% of its average size. Variation of critical crack size and crack initiation point for several design stresses and fracture toughness has been investigated with probabilistic fracture mechanics technique. The observed crack propagation by calculating final crack size and the cumulative crack failure probability of the reactor pressure vessel materials are presented in this work.Journal of Bangladesh Academy of Sciences, Vol. 41, No. 2, 237-245, 2017
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Crack Propagation (Material Science)"

1

Behera, Santosh K. "Molecular Dynamics Simulation of Crack Propagation in Nickel." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1285010270.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Guzek, John S. (John Stephen). "Fatigue crack propagation along polymer-metal interfaces in microelectronic packages." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/41401.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

GHOSH, DIPANKAR. "CRACK PROPAGATION AND FRACTURE RESISTANCE BEHAVIOR UNDER FATIGUE LOADING OF A CERAMIC MATRIX COMPOSITE." University of Cincinnati / OhioLINK, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1019491575.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Echeverria, Molina Maria Ines. "Crack Analysis in Silicon Solar Cells." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4311.

Full text
Abstract:
Solar cell business has been very critical and challenging since more efficient and low costs materials are required to decrease the costs and to increase the production yield for the amount of electrical energy converted from the Sun's energy. The silicon-based solar cell has proven to be the most efficient and cost-effective photovoltaic industrial device. However, the production cost of the solar cell increases due to the presence of cracks (internal as well as external) in the silicon wafer. The cracks of the wafer are monitored while fabricating the solar cell but the present monitoring techniques are not sufficient when trying to improve the manufacturing process of the solar cells. Attempts are made to understand the location of the cracks in single crystal and polycrystalline silicon solar cells, and analyze the impact of such cracks in the performance of the cell through Scanning Acoustic Microscopy (SAM) and Photoluminescence (PL) based techniques. The features of the solar cell based on single crystal and polycrystalline silicon through PL and SAM were investigated with focused ion beam (FIB) cross section and scanning electron microscopy (SEM). The results revealed that SAM could be a reliable method for visualization and understanding of cracks in the solar cells. The efficiency of a solar cell was calculated using the current (I) - voltage (V) characteristics before and after cracking of the cell. The efficiency reduction ranging from 3.69% to 14.73% for single crystal, and polycrystalline samples highlighted the importance of the use of crack monitoring techniques as well as imaging techniques. The aims of the research are to improve the manufacturing process of solar cells by locating and understanding the crack in single crystal and polycrystalline silicon based devices.
APA, Harvard, Vancouver, ISO, and other styles
5

Wen, Wei. "A THREE-DIMENSIONAL QUANTITATIVE UNDERSTANDING OF SHORT FATIGUE CRACK GROWTH IN HIGH STRENGTH ALUMINUM ALLOYS." UKnowledge, 2013. http://uknowledge.uky.edu/cme_etds/18.

Full text
Abstract:
The behaviors of short fatigue crack (SFC) propagation through grain boundaries (GBs) were monitored during high cycle fatigue in an Al-Li alloy AA8090. The growth behaviors of SFCs were found to be mainly controlled by the twist components (α) of crack plane deflection across each of up to first 20 GBs along the crack path. The crack plane twist at the GB can result in a resistance against SFC growth; therefore SFC propagation preferred to follow a path with minimum α at each GB. In addition to the grain orientation, the tilting of GB could also affect α. An experiment focusing on quantifying GB-resistance was conducted on an Al-Cu alloy AA2024-T351. With a focused ion beam (FIB) and electron backscatter diffraction (EBSD), the micro-notches were made in front of the selected GBs which had a wide range of α, followed by monitoring the interaction of crack propagation from the notches with the GBs during fatigue. The crack growth rate was observed to decrease at each GB it had passed; and such growth-rate decrease was proportional to α. The resistance of the GB was determined to vary as a Weibull-type function of α. Based on these discoveries, a microstructure-based 3-D model was developed to quantify the SFC growth in high-strength Al alloys, allowing the prediction of crack front advancement in 3-D and the quantification of growth rate along the crack front. The simulation results yielded a good agreement with the experimental results about the SFC growth rate on the surface of the AA8090 Al alloy. The model was also used to predict the life of SFC growth statistically in different textures, showing potential application to texture design of alloys. Fatigue crack initiation at constituent particles (β-phase) was preliminarily studied in the AA2024-T351 Al alloy. Cross-sectioning with the FIB revealed that the 3-D geometry, especially the thickness, of fractured constituent particles (β-phase) was the key factor controlling the driving force for micro-crack growth. The resistance to micro-crack growth, mainly associated with crack plane twist at the particle/matrix interface, also influenced the growth behaviors of the micro-cracks at the particles on the surface.
APA, Harvard, Vancouver, ISO, and other styles
6

Sun, Lingtao. "Etude numérique de l'amorçage et de la propagation de fissures de fretting." Phd thesis, Ecole Nationale Supérieure des Mines de Paris, 2012. http://pastel.archives-ouvertes.fr/pastel-00755695.

Full text
Abstract:
La liaison aube-disque d'un turboréacteur est soumise en opération à un chargement complexe composé d'une forte pression et d'un mouvement relatif oscillatoire, qui génère un phénomène de fretting-fatigue. L'apparition de celui-ci réduit la résistance en fatigue des structures et engendre des dégradations qui, sous différentes formes (usure, rupture), peuvent conduire à une perte de fonctionnalité. Afin d'assurer la fiabilité des turboréacteurs, il est donc utile d'améliorer l'estimation de la durée de vie sous chargement de fretting.Cette thèse est dédiée à la fois à l'étude de l'amorçage de la première fissure et de sa micropropagation dans le domaine dit "des fissures courtes", c'est-à-dire celles qui sont encore directement influencées par la microstructure locale. Pour remplir la première exigence, on développe un modèle numérique mettant en oeuvre un critère multiaxial de fatigue. Il permet de prédire la position de l'amorçage et le nombre de cycles correspondant, en prenant en compte d'éventuels traitements de surface. Dans un second temps, une étude numérique de la direction et de la cinétique de propagation des fissures est mise en place avec prise en compte de l'influence de la microstructure du matériau, à l'aide d'un modèle de plasticité cristalline qui prend en compte les différentes familles de systèmes de glissement. La vitesse de fissuration diminue à l'approche des joints de grains, ce qui est qualitativement conformes aux observations expérimentales.
APA, Harvard, Vancouver, ISO, and other styles
7

Andersson-Östling, Henrik C. M. "Mechanical Properties of Welds at Creep Activation Temperatures." Doctoral thesis, KTH, Materialvetenskap, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12077.

Full text
Abstract:
Welds in materials intended for service at temperatures above the creep activation temperature often develop damage before the base metal. The weld is a discontinuity in the material and stresses and strains often accumulate in the weld. Knowledge of the properties of the weld is essential to the safe operation of the component containing the weld. The work in this thesis has been aimed at the study of welds in service at high temperatures: The work is divided into two main chapters. The first chapter deals with welds in stainlesssteels and dissimilar metal welds and includes three papers, and the second chapter dealswith welds in copper intended for nuclear waste disposal, also including three papers. Common to both parts is that the temperature is high enough for most of the damage in the welds to result from creep. In the first part the role of the weld microstructure on the creep crack propagation properties has been studied. Experiments using compact tension specimens have been performed on service exposed, low alloyed heat resistant steels. The results show good correlation with the crack tip parameter, C*, during steady state creep crack growth. The test methodology has also been reviewed and sensitive test parameters have been identified. The results from the creep crack propagation tests on service exposed material has been modeled using uniaxial creep data on both new and ex-service material. The development of the weld microstructure in a dissimilar metal weld between two heat resistant steels has also been investigated. A weld was made between one ferritic and one martensitic steel and the development of the microstructure during welding and post-weldheat treatments has been studied. The results show that the carbon depleted zone that develops near the weld metal in the lower alloyed steel depends on the formation and dissolution of the M23C6-carbide. Variations of the weld parameters and the post-weld heat treatment affect the size and shape of this zone. The process has been successfully modeled by computer simulation. The second part focuses on oxygen free copper intended for nuclear waste disposal containers. The containers are made with an inner core of cast nodular iron and an outer core of copper for corrosion protection. The copper shell has to be welded and two weld methods has been tested, electron beam welding and friction stir welding. Creep specimens taken from both weld types have been tested as have base metal specimens. The technical specifications of the waste canisters demand that the creep ductility of both the copper shell and the welds has to be as high as possible. The creep test results show that base material doped with at least 30 ppm phosphorus has high creep ductility, and friction stir welds made from this material has almost as high creep strength and creep ductility. Copper without phosphorus does not exhibit the same ductility. The creep properties evaluated from testing has been modeled and extrapolated for the intended purpose
QC20100719
APA, Harvard, Vancouver, ISO, and other styles
8

Galland, Florent. "An adaptive model reduction approach for 3D fatigue crack growth in small scale yielding conditions." Phd thesis, INSA de Lyon, 2011. http://tel.archives-ouvertes.fr/tel-00596397.

Full text
Abstract:
It has been known for decades that fatigue crack propagation in elastic-plastic media is very sensitive to load history since the nonlinear behavior of the material can have a great influence on propagation rates. However, the raw computation of millions of fatigue cycles with nonlinear material behavior on tridimensional structures would lead to prohibitive calculation times. In this respect, we propose a global model reduction strategy, mixing both the a posteriori and a priori approaches in order to drastically decrease the computational cost of these types of problems. First, the small scale yielding hypothesis is assumed, and an a posteriori model reduction of the plastic behavior of the cracked structure is performed. This reduced model provides incrementally the plastic state in the vicinity of the crack front, from which the instantaneous crack growth rate is inferred. Then an additional a priori model reduction technique is used to accelerate even more the time to solution of the whole problem. This a priori approach consists in building incrementally and without any previous calculations a reduced basis specific to the considered test-case, by extracting information from the evolving displacement field of the structure. Then the displacement solutions of the updated crack geometries are sought as linear combinations of those few basis vectors. The numerical method chosen for this work is the finite element method. Hence, during the propagation the spatial discretization of the model has to be updated to be consistent with the evolving crack front. For this purpose, a specific mesh morphing technique is used, that enables to discretize the evolving model geometry with meshes of the same topology. This morphing method appears to be a key component of the model reduction strategy. Finally, the whole strategy introduced above is embedded inside an adaptive approach, in order to ensure the quality of the results with respect to a given accuracy. The accuracy and the efficiency of this global strategy have been shown through several examples; either in bidimensional and tridimensional cases for model crack propagation, including the industrial example of a helicopter structure.
APA, Harvard, Vancouver, ISO, and other styles
9

Linder, Jan. "Fatigue strength of engineering materials - the influence of environment and porosity : the use of linear elastic fracture mechanics to assess the influence of environment and porosity on the fatigue strength for engineering materials /." Doctoral thesis, KTH, Industriell ekonomi och organisation (Inst.), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4195.

Full text
Abstract:
The objective of this work was to use LEFM in order to assess the detrimental influence of surrounding chloride-containing environments for stainless steels, hardened steel as well as for a cast aluminium alloy. An additional aim was also to use LEFM to assess the influence of porosity on the fatigue properties for different commercial cast aluminium alloys and manufacturing methods. The environmental influence on fatigue performance was mainly evaluated from fatigue crack growth measurements using compact tension (CT) specimens. In addition, fatigue performance in the high cycle regime was studied using spot welded specimens and smooth specimens. Corrosion fatigue tests for stainless steels were performed in different chloride-containing aqueous solutions and compared to the behaviour in air. Variables, which have been investigated, included temperature, redox potential and fatigue test frequency. The environmental influence on fatigue performance has also been compared to localised corrosion properties. Fatigue crack propagation rates were found to be higher in 3% NaCl than in air for all stainless steels investigated. The highest alloyed austenitic steel, 654SMO, showed the least influence of the environment. For duplex stainless steels the environment enhanced fatigue crack propagation rate to a higher degree than for austenitic stainless steels. This is explained by a material-dependent corrosion fatigue mechanism. In the high cycle regime, fatigue properties for spot welded stainless steels specimens were found to be decreased between 30%-40% due to the presence of 3% NaCl. For the hardened steel 100CrMnMo8 a fracture mechanics approach was employed for prediction of corrosion fatigue properties. In this model corrosion pit growth rate and the threshold stress intensity factor for fatigue crack propagation are needed as input parameters. For the high pressure die cast aluminium alloy the environmental influence of fatigue initiation through pre-exposure of smooth specimens was studied. Depending on environment used for pre-exposure, fatigue strength was found to be reduced by up to 50 % compared to the fatigue strength in air. Fatigue strength reduction was clearly associated to corrosion pits in the aluminium material. A fracture mechanics model was further successfully used to predict the environmental influence. The influence of porosity on the fatigue strength for the cast aluminium alloys tested has been described by a Kitagawa diagram. In design, the Kitagawa diagram can be used to predict the largest allowable pore size if the load situation in the component is known. The size of the porosity could either be evaluated directly from x-ray images or from metallographic prepared cross-sections using a method of extreme value analysis
QC 20100907
APA, Harvard, Vancouver, ISO, and other styles
10

Bassaw, Benjamin. "Comportement en fatigue d'un alliage expérimental Cu-Al(2)O(3) : (base cuivre à dispersion d'alumine) élaboré par métallurgie des poudres." Poitiers, 1988. http://www.theses.fr/1988POIT2263.

Full text
Abstract:
Des essais de traction-compression dans le domaine de fatigue plastique ont revele la grande stabilite cyclique du materiau. Analyse des conditions d'amorcage et de propagation des fissures. Mise en evidence du role des defauts de frittage ou des inclusions. Des essais de fissuration sont effectues dans le domaine des moyennes et basses vitesses en considerant l'effet du rapport de charge et de l'environnement. Description par la mecanique lineaire de rupture du comportement des microfissures
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Crack Propagation (Material Science)"

1

Koning, A. V. de. Finite element analyses of stable crack growth in thin sheet material. Amsterdam: National Aerospace Laboratory, 1985.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Schwarmann, L. Material data of high-strength aluminium alloys for durability evaluation of structures: Fatigue strength, crack propagation, fracture toughness. Düsseldorf: Aluminium-Verlag, 1986.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Crack analysis in structural concrete: Theory and applications. Burlington, MA: Butterworth-Heinemann, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

International Symposium on Electromagnetic Fields in Electrical Engineering (1987 Pavia, Italy). Electromagnetic fields in electrical engineering. New York: Plenum Press, 1988.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

ASTM Committee D-30 on High Modulus Fibers and Their Composites (Corporate Author), Astm Committee E-24 on Fracture Testing (Corporate Author), Symposium on Composite Materials: Fatigue and Fracture (Corporate Author), H. Thomas Hahn (Editor), Paul A. Lagace (Editor), and T. Kevin O'Brien (Editor), eds. Composite Materials: Fatigue and Fracture (Astm Special Technical Publication// Stp). American Society for Testing & Materials, 1989.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

R. A. M. Chandra Prasad. Fracture Mechanics Study of Corrosion Fatigue: Influence of Microstructure on Crack Propagation Rates in Heat Treated 7075 - Alclad Aluminium Alloy. Namya Press, 2022.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Shi, Zihai. Crack Analysis in Structural Concrete: Theory and Applications. Elsevier Science & Technology, 2009.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ebrahimi, Farzad, and Ali Dabbagh. Wave Propagation Analysis of Smart Nanostructures. Taylor & Francis Group, 2019.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ebrahimi, Farzad, and Ali Dabbagh. Wave Propagation Analysis of Smart Nanostructures. Taylor & Francis Group, 2019.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

Wave Propagation Analysis of Smart Nanostructures. Taylor & Francis Group, 2019.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Crack Propagation (Material Science)"

1

Trampus, Peter. "Micro Structural Aspects of Unstable Crack Propagation in Ferritic Steels." In Materials Science Forum, 465–72. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-426-x.465.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Náhlík, Luboš, Pavel Hutař, and Zdeněk Knésl. "Transverse Cracking of Layered Structures: Evaluation of Fatigue Crack Propagation." In Materials Science Forum, 221–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-469-3.221.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Náhlík, Luboš, Lucie Šestáková, and Pavel Hutař. "Estimation of the Crack Propagation Direction of a Crack Touching the Interface between Two Elastic Materials." In Materials Science Forum, 225–28. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-469-3.225.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Marimuthu, Karuppasamy Pandian, Kwangmin Lee, and Hyungyil Lee. "Numerical Simulation of Crack Propagation in Double Torsion Test." In Advanced Manufacturing and Materials Science, 359–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-76276-0_36.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Shterenlikht, A., Danut Stefanescu, Matthew E. Fox, Kerry Taylor, Joao Quinta da Fonseca, Andrew H. Sherry, and Philip J. Withers. "Measuring and Predicting the Effects of Residual Stresses on Crack Propagation." In Materials Science Forum, 77–82. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-414-6.77.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Di Sante, Raffaella, Pasquale Cavaliere, Gian Luca Rossi, and A. Squillace. "Thermoelastic Analysis of Crack Propagation in AA6082 Friction Stir Welded Joints." In Materials Science Forum, 2221–24. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.2221.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Toyosada, Masahiro, and Koji Gotoh. "The Significance of Plastic Zone Growth under Cyclic Loading and Crack Opening/Closing Model in Fatigue Crack Propagation." In Materials Science Forum, 95–102. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-964-4.95.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Kastratović, Gordana, Nenad Vidanović, Aleksandar Grbović, Nikola Mirkov, and Boško Rašuo. "Numerical Simulation of Crack Propagation in Seven-Wire Strand." In Computational and Experimental Approaches in Materials Science and Engineering, 76–91. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-30853-7_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Sha, Gui Ying, Yong Bo Xu, and En Hou Han. "Dynamic Crack Propagation Behavior of the Mg-Li Alloys under High-Speed Impact Loading." In Materials Science Forum, 717–20. Stafa: Trans Tech Publications Ltd., 2005. http://dx.doi.org/10.4028/0-87849-968-7.717.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Xu, Dao Kui, Wei Neng Tang, Lu Liu, Yong Bo Xu, and En Hou Han. "The Fatigue Crack Propagation (FCP) Behavior of the Forged Mg-Zn-Y-Zr Alloy." In Materials Science Forum, 343–46. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.343.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Crack Propagation (Material Science)"

1

"Fatigue Fracture and Crack Propagation in Concrete Subjected to Tensile Biaxial Stresses." In SP-206: Concrete: Material Science to Application - A Tribute to Surendra P. Shah. American Concrete Institute, 2002. http://dx.doi.org/10.14359/12243.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Abdulrazzaq, Mohammed, and Kareem Al-Adily. "Crack propagation for Ni-Al functionally graded material using finite element analysis." In CONFERENCE ON MATHEMATICAL SCIENCES AND APPLICATIONS IN ENGINEERING: CMSAE-2021. AIP Publishing, 2023. http://dx.doi.org/10.1063/5.0148198.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Kao, Yi-Tang, Ying Zhang, Jyhwen Wang, and Bruce L. Tai. "Loading-Unloading Cycles of 3D-Printing Built Bi-Material Structures With Ceramic and Elastomer." In ASME 2016 11th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/msec2016-8791.

Full text
Abstract:
This paper studies the loading-unloading behaviors of a 3D-printing built bi-material structure consisting of an open-cellular plaster frame filled with silicone. The combination of the plaster (ceramic phase) and silicone (elastomer phase) is hypothesized to possess a non-linearly elastic property and a better ductility. Four-point bending test with programmed cycles of preceding deformations was conducted. The results show that there exists a linear-nonlinear transition when the bending deflection is around 2 mm in the first cycle bending. As the cycle proceeds, this transition is found at the maximum deflection of the previous cycle; meanwhile, the bending stiffness degrades. It is believed that the occurrence of micro-cracks inside the plaster frame is the mechanism behind the phenomenon. The ductile silicone provides a strong network suppressing the abrupt crack propagation in a brittle material. The effects of the frame structure and plaster-silicone ratio were also compared. A high plaster content and large cell size tend to have a higher stiffness and obvious linear to non-linear transition while it also has more significant stiffness degradation.
APA, Harvard, Vancouver, ISO, and other styles
4

Makarenko, Konstantin, Alexander Nikitin, and Andrey Parenko. "Fractographic analysis of fractures of graphitized cast iron using optical microscopy." In International Conference "Computing for Physics and Technology - CPT2020". Bryansk State Technical University, 2020. http://dx.doi.org/10.30987/conferencearticle_5fce27703aebb2.03360772.

Full text
Abstract:
Fractography - methods for studying material fractures, the science of the structure of fracture surfaces. Fractography is widely used to determine the causes of destruction of materials and structures. In materials sciences, fractography is used to study crack propagation, microstructure studies, and quality control. When investigating the failure of structures, determining the type of crack (material fatigue, hydrogen embrittlement, stress corrosion cracking, exceeding the permissible load, etc.) makes it possible to determine the cause of the failure. Fractographic studies include the study of a fracture with the naked eye, using an optical and electron microscope. Other methods are also often used, such as measuring hardness or studying the distribution of chemical elements using X-ray spectral microanalysis. Fractographic (or fracture) analysis is the first and obligatory stage of research that must be performed by an expert of the metallurgical examination laboratory when determining the causes of material destruction. Visual examination of the fracture (fracture) surface makes it possible to establish the location of the beginning of fracture, the nature of its further course, to make a judgment about the degree of plasticity of the material and about possible structural defects that led to the initiation and development of cracks. The use of fractographic analysis methods for reconstructing the fracture surface of graphitized cast iron is proposed. The influence of various inclusions in the structure of cast iron is considered. A study of the fracture surface of graphitized cast irons was carried out, and the causes affecting the fracture process were identified.
APA, Harvard, Vancouver, ISO, and other styles
5

Albishi, Ali, and Omar Ramahi. "Ultrasensitive microwave near-field based sensors for crack detection in metallic materials." In 2016 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting. IEEE, 2016. http://dx.doi.org/10.1109/aps.2016.7696684.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Qu, Zhen, Long Zhang, Lin Yan, Zhuohui Ni, and Jiayu Wu. "Experimental crack propagation and fracture failure analysis of the titanium alloy blade subjected to high cycle fatigue." In MATERIALS SCIENCE, ENERGY TECHNOLOGY AND POWER ENGINEERING III (MEP 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5125333.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Gheldane, Farid, Lotfi Ain Souya, Seddik Bouras, Muhammed Hasan Aslan, Ahmet Yayuz Oral, Mehmet Özer, and Süleyman Hikmet Çaglar. "Study of the Crack Propagation in Alumina Mullite Zirconia and Mullite Zirconia Composites Obtained by Reaction Sintering." In INTERNATIONAL CONGRESS ON ADVANCES IN APPLIED PHYSICS AND MATERIALS SCIENCE. AIP, 2011. http://dx.doi.org/10.1063/1.3663139.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Vavilova, V. V., and S. A. Arefieva. "Unique application of composite materials in modern science and technology." In IV International Scientific Conference MIP: Engineering-IV-2022: Modernization, Innovations, Progress: Advanced Technologies in Material Science, Mechanical and Automation Engineering. Krasnoyarsk Science and Technology City Hall, 2022. http://dx.doi.org/10.47813/mip.4.2022.4.41-47.

Full text
Abstract:
This article discusses composite materials, their structure, advantages and disadvantages, in which industries they are used and why their use is so relevant and in demand in the modern world. It is noted that composite parts are much more resistant to stress fracture than metal parts, since composites, due to their complex structure, redistribute internal stresses and block the propagation of small cracks. It is concluded that composite materials will become the most used and convenient materials if used correctly.
APA, Harvard, Vancouver, ISO, and other styles
9

Stan, Felicia. "Study of the Dynamic Crack Growth of a Planar Crack Front in Three-Dimensional Body Subjected to Mode I Loading." In ASME 2008 International Manufacturing Science and Engineering Conference collocated with the 3rd JSME/ASME International Conference on Materials and Processing. ASMEDC, 2008. http://dx.doi.org/10.1115/msec_icmp2008-72239.

Full text
Abstract:
In this paper, a methodology is presented for predicting crack growth rate along three-dimensional crack fronts under mode I dynamic loading conditions. Within the present methodology, for every point along the crack front the stress intensity factor matches the dynamic fracture toughness at the onset of propagation. In order to accurately evaluate the dynamic stress intensity factor the component separation method of the dynamic J integral is used. To overcome the difficulties in three-dimensional dynamic fracture simulations, the three-dimensional dynamic moving finite element method based on three-dimensional moving 20-noded isoparametric elements is used. In the absence of experimental measurements for dynamic fracture toughness, a new methodology to estimate the dynamic fracture toughness is proposed, i.e., a hybrid experimental-numerical approach, which makes use of numerically determined histories of the dynamic stress intensity factor. The values of the dynamic stress intensity factor are converted into dynamic fracture toughness based on the Weibull distribution. The predictive ability of the developed methodology is demonstrated through the prediction of the dynamic crack growth in Double Cantilever Beam (DCB) specimen of PMMA with different thickness.
APA, Harvard, Vancouver, ISO, and other styles
10

Wang, Runying, and Xiajuan Jing. "Study on Three-Dimensional Radial Point Interpolation Meshfree Method of Simulation of Crack Propagation for Concrete." In Thirteenth ASCE Aerospace Division Conference on Engineering, Science, Construction, and Operations in Challenging Environments, and the 5th NASA/ASCE Workshop On Granular Materials in Space Exploration. Reston, VA: American Society of Civil Engineers, 2012. http://dx.doi.org/10.1061/9780784412190.111.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Crack Propagation (Material Science)"

1

Liu, C. T., and T. C. Miller. Effect of Crack Size on Growth Initiation and Propagation Behavior in a Particulate Composite Material. Fort Belvoir, VA: Defense Technical Information Center, May 2000. http://dx.doi.org/10.21236/ada408509.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Biagio, Massimo Di. PR-182-124505-R04 Developing Tools to Assure Safety Against Crack Propagation. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), March 2018. http://dx.doi.org/10.55274/r0011472.

Full text
Abstract:
Recent industry experience is showing that modern lower grade steels (X60 to X70) are not having the same fracture behavior as older steels of the same grade. As a major consequence, past material qualification test methods may be no longer valid for these new steels and may not provide safe design guidance, both for the evaluation of the brittle to ductile transition temperature and for the prediction of ductile fracture arrest requirements. MAT-8-1 Project Phase 2 was specifically focused on brittle-to-ductile transition temperature assessment and may ultimately lead to reliable testing methods to evaluate the behavior of modern steels, to allow the industry to design safe gas pipelines. Specific small and full-scale experimental activities have been carried out, with the aim to verify the correspondence between the brittle-to-ductile transition temperatures determined using different small-scale sample geometries and comparing the results with four full-scale West Jefferson tests.
APA, Harvard, Vancouver, ISO, and other styles
3

Biagio, Di. L52037 Ductile Fracture Propagation Resistance for Advanced Pipeline Designs. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 2008. http://dx.doi.org/10.55274/r0011001.

Full text
Abstract:
The development of a method able to evaluate the ductile fracture behavior on pipelines has been documented. Therefore, methods for the determination of material fracture resistance and crack driving force have been accurately investigated. In particular, the techniques to determine the critical fracture characterizing parameter CTOA (crack tip opening angle) have been reviewed in-depth (back-slotted drop weight tear tests [DWTT], two specimen CTOA tests, etc.), and in view of a future pipe-mill application. For a more reliable CTOA estimate the needed following parameters have been investigated: 1) rotation factor in a DWTT and 2) the material flow stress to be used in dynamic tests. On the other hand, as far as the crack driving force is concerned, a finite element code developed by CSM (PICPRO) has been successfully used to evaluate the correlation between the CTOA inferred by DWT tests and that measured on pipe. In addition PICPRO has been used to determine the driving force acting on pipe in a wide range of operating conditions, finally supplying an appropriate formula for its calculation. Once the driving force and the fracture resistance have been determined their comparison allows crack arrest assessment.
APA, Harvard, Vancouver, ISO, and other styles
4

Malik. L51877 Crack Arrest Toughness to Avoid Dynamic Ductile Fracture in Gas Transmission Pipelines. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), March 2001. http://dx.doi.org/10.55274/r0010192.

Full text
Abstract:
Design against long ductile fracture propagation in gas pipelines involves an analysis of the balance between driving force, derived from the gas pressure, and the fracture resistance of the material. Initially, the shelf energy in the Charpy test was successfully used as a measure of fracture propagation resistance. As material strength, pipe diameter and operating pressures increased and required greater fracture propagation resistance, the limitations of the Charpy energy approach became increasingly apparent. This limitation for modern steels is due to the fact that the Charpy test involves significant energy absorption contributions from processes not related to fracture propagation. If an energy-balance approach is to be maintained, and if material resistance is to be measured in a fairly simple laboratory notch bend test (e.g. Charpy or drop-weight tear), the problem reduces to the isolation of the propagation energy absorption per unit of crack advance. To resolve crack propagation energy, a novel modification was evaluated for both Charpy and DWTT specimens by employing a back-slot including a snug fitting shim to replace the removed material. In most cases, this modification was effective in curtailing the load-displacement trace when the propagating crack interacted with the slot on the backside of the specimen. It is also noted that this approach did not affect the initial portion of the load-displacement history and thus allowed crack propagation energies to be resolved.
APA, Harvard, Vancouver, ISO, and other styles
5

Weeks, Timothy "Dash." DTPH56-13-X-000013 Modern High-Toughness Steels for Fracture Propagation and Arrest Assessment-Phase II. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), September 2018. http://dx.doi.org/10.55274/r0012037.

Full text
Abstract:
NIST work developed processes to identify the stress/strain/crack velocity conditions for unstable high-rate ductile crack propagation found in a full-scale pipeline burst test and duplicate those conditions in a medium-scale test. With modeling to validate conditions and assumptions used in reducing the scale of the tests. A medium-scale test to elucidate material property data necessary to qualify high-strength high-toughness steels based on the correlation to large-scale tests. Parametric determination of the material properties governing fracture propagation or arrest-ability was developed. This will assist researchers to determine a relevant and effective small-scale test (or tests) that provides enough information for material selection, design, reliability, as well as integrity and risk assessment. Pipe evaluated includes API5L X70 and X80 pipe. The strain was measured by a three-dimensional digital image correlation system. This project takes a phased approach with complementary research in successive phases beginning with a road map to systematically fill gaps in knowledge and understanding of the problem of unstable high-rate ductile running failures in pipelines. This report is structured to highlight the problem statement with respect to the current state of the art understanding, define knowledge gaps and present the plan, and progress toward meeting the objective. The following sections specifically cover the effort to develop and inform a constitutive material model necessary for the structural model of the medium-scale test. The material testing required to inform the constitutive material model is presented. Conclusions of this phase of the project are also presented in addition to the proposed work in Phase III of the project.
APA, Harvard, Vancouver, ISO, and other styles
6

Gill. L51675 Effects of Weldment Property Variations on the Behavior of Line Pipe. Chantilly, Virginia: Pipeline Research Council International, Inc. (PRCI), January 1993. http://dx.doi.org/10.55274/r0010133.

Full text
Abstract:
A steel weldment is a composite of zones or layers of different microstructures that possess different material properties. The zones include the base metal (or the sections of pipe), the weld metal, and a complex heat-affected zone (HAZ) of base metal that has been exposed to a variety of thermal cycles resulting in varying microstructures. The material properties of primary concern with respect to the mechanical behavior of the pipe are the stress-strain response (the constitutive properties) and the resistance to initiation and propagation of cracks or tears in the presence of a crack, notch, or other stress concentrator (the fracture toughness properties). Most of the experimental data on the behavior of welds with significant discontinuities were obtained from test specimens with surface or through-thickness notches or cracks. These data typically show an increase in load or nominal ductility for overmatched welds and a decrease in load or nominal ductility for undermatched welds. However, there are cases where the presence of a soft zone may enhance the nominal ductility and cases where overmatched welds will decrease the nominal ductility. The latter is especially likely in a girth weld with a circumferential crack in the HAZ.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Crack Propagation (Material Science)' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography