Relevant bibliographies by topics / Tensile strength; Compression tests; Fracture / Journal articles
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Journal articles on the topic 'Tensile strength; Compression tests; Fracture'

Author: Grafiati
Published: 4 June 2021
Last updated: 3 February 2022

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1

Wang, Min, C. L. Au, P. K. Lai, and William Bonfield. "Tensile and Compressive Behaviours and Properties of a Bone Analogue Biomaterial." Key Engineering Materials 284-286 (April 2005): 693–96. http://dx.doi.org/10.4028/www.scientific.net/kem.284-286.693.

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For the purpose of mimicking the structure and matching mechanical properties of human cortical bone, a natural composite material, hydroxyapatite (HA) reinforced high density polyethylene (HDPE) has been developed as a bioactive, analogue material for bone replacement. This synthetic composite material is now in clinical use. To understand the deformation behaviour and determine mechanical properties of HA/HDPE composite under different loading modes and loading conditions, tensile and compression tests were performed in the current investigation. It was observed that under tension, HA/HDPE c
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2

Teschke, Mirko, Alexander Koch, and Frank Walther. "Comparison of High-Temperature Compression and Compression-Compression Fatigue Behavior of Magnesium Alloys DieMag422 and AE42." Materials 13, no. 3 (2020): 497. http://dx.doi.org/10.3390/ma13030497.

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Due to their high strength-to-weight-ratio, magnesium alloys are very attractive for use in automotive engineering. For application at elevated temperatures, the alloys must be creep-resistant. Therefore, the influence of the operating temperature on the material properties under quasistatic and cyclic load has to be understood. A previous study investigated tensile-tensile fatigue behavior of the magnesium alloys DieMag422 and AE42 at room temperature (RT). The aim of this study was the comparison of both alloys regarding compression, tensile, and compression-compression fatigue behavior. The
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3

Gontarz, Jakub, and Jacek Szulej. "Report on laboratory tests of sandstone and porphyry for rock fracture analysis." Budownictwo i Architektura 19, no. 2 (2020): 087–100. http://dx.doi.org/10.35784/bud-arch.1540.

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The paper presents the results of mechanical tests of three types of rocks from stone mines in Poland. Compression tests of cubic samples, three-point bending tests of beams, bending of beams with notch and testing of tensile strength using the quasi-Brazilian method were performed. Based on the tests, the compressive strength, tensile strength, Young's modulus, and Poisson's ratios were determined. The stress intensity factor and critical strain energy release rate in mode I were determined from the bending test of the notched beams. The determined values were used as parameters of computer m
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4

Shaikh, Asad, Alexander Churyumov, Andrey Pozdniakov, and Tatiana Churyumova. "Simulation of the Hot Deformation and Fracture Behavior of Reduced Activation Ferritic/Martensitic 13CrMoNbV Steel." Applied Sciences 10, no. 2 (2020): 530. http://dx.doi.org/10.3390/app10020530.

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This study describes deformation behavior and fracture during compression and tension at high temperatures of ferritic/martensitic 13CrMoNbV steel. Hot compression and tensile tests were carried out in the temperature range of 1100–1275 °C with a thermomechanical simulator Gleeble 3800. The true stress and ultimate tensile strength decrease with an increase in the deformation temperature. The modified Arrhenius-type constitutive model was built for 13CrMoNbV ferritic/martensitic steel using the experimental stress–strain compression data. The modified Rice and Tracy ductile fracture criteria w
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Kok Shien, Ng, Chew Yee Ming, and Nordin Sukri. "Fracture behaviour of Cement Treated Sandy Clay." MATEC Web of Conferences 303 (2019): 01001. http://dx.doi.org/10.1051/matecconf/201930301001.

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Addition of cement into soft soil has been proven to be useful in stabilizing the foundation. However, some failure cases are found related to this type of technique, especially involving the tensile failure of cement column as retaining structure. As we know, tensile strength of soil is important in controlling the cracking and tensile failure of many earth structures. This paper aims to investigate the fracture behaviour of cement treated sandy clay in terms of its compressive and tensile strength as well as its strain response under applied stress. Three laboratory testing namely the unconf
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6

Kim, Young-Kyun, and Kee-Ahn Lee. "Tensile and Compressive Deformation Behaviors of High-Strength Cu Bulk Material Manufactured by Cold Spray." Korean Journal of Metals and Materials 58, no. 11 (2020): 759–67. http://dx.doi.org/10.3365/kjmm.2020.58.11.759.

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In this study, high-strength pure Cu bulk material was manufactured using a cold spray additive manufacturing process, and its microstructure, tensile and compressive deformation behaviors were investigated and compared. The cold spray additive manufactured Cu bulk material showed a heterogeneous grain structure consisting of fine-grains and coarse-grains, and only α – Cu single phase was identified. The cold spray Cu exhibited yield strengths of ~415 MPa in tensile- and compression tests, indicating that it had similar mechanical properties in different deformation modes. The yield strength v
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7

Ivanov, Sergey G., Dries Beyens, Larissa Gorbatikh, and Stepan V. Lomov. "Damage development in woven carbon fibre thermoplastic laminates with PPS and PEEK matrices: A comparative study." Journal of Composite Materials 51, no. 5 (2016): 637–47. http://dx.doi.org/10.1177/0021998316653460.

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In this work, we investigate the effect of the matrix on the mechanical performance of woven carbon fibre composites. More specifically, composites with the same 5-harness satin carbon fabric reinforcement and different thermoplastic matrices, PPS and PEEK, are compared in various mechanical tests (tensile, interlaminar fracture toughness and compression-after-impact tests). The results of tension tests show the influence of the matrix type on the development of cracks in yarns. The cracks in carbon fabric/PEEK composite appear later than in carbon fabric/PPS composite. Their density is also l
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8

Hoos, Kevin, Endel V. Iarve, Michael Braginsky, Eric Zhou, and David H. Mollenhauer. "Static strength prediction in laminated composites by using discrete damage modeling." Journal of Composite Materials 51, no. 10 (2016): 1473–92. http://dx.doi.org/10.1177/0021998316651986.

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Discrete Damage Modeling of complex local failure patterns in laminated composites including matrix cracking, delamination, and fiber failure was performed. Discrete Damage Modeling uses the Regularized eXtended Finite Element Method for the simulation of matrix cracking at initially unknown locations and directions independent of the mesh orientation. Cohesive interface model is used both for Mesh Independent Cracking as well as delamination propagation. The fiber failure mode is modeled by two different methods in tension and compression. Tensile failure is predicted by Critical Failure Volu
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9

Závacký, Martin, Tomáš Majda, Iva Rozsypalová, and Jan Štefaňák. "Moravian greywacke – evaluation of fracture, strength and deformability properties." E3S Web of Conferences 133 (2019): 02003. http://dx.doi.org/10.1051/e3sconf/201913302003.

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This contribution brings overview of mechanical properties of greywacke with focus on fracture mechanics parameters. Investigated rock type is clastic sediment, relatively widespread in Moravia region. The rock type is significantly utilized in construction industry. For purposes of this study, Kobeřice quarry was selected as sampling locality. Mechanical properties were investigated by deformation controlled 3-point bending test. Chevron notch was created on specimens in order to study fracture mechanics parameters. Moreover, deformation controlled uniaxial compression tests were carried out,
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10

Rasidhar, Lanka, A. Rama Krishna, Ch Srinivasa Rao, and K. Vijaya Lakshmi. "Development and Evaluation of Mechanical Properties of Al/Ilmenite Nanocomposite." Applied Mechanics and Materials 704 (December 2014): 32–38. http://dx.doi.org/10.4028/www.scientific.net/amm.704.32.

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In the present investigation, microstructure and mechanical properties of nanocomposites fabricated via stir casting were evaluated. The composites were based on Al (99.7) reinforced with ilmenite nanoparticles. The characterization of the nanoparticles and nanocomposites was investigated by scanning electron microscopy (SEM) and X-ray diffraction (XRD) facilities. Microstructure of specimens show that reasonable distribution of FeTiO3 nanoparticles in the matrix, secondary phase FeAl3 observed in the microstructure. Ultimate tensile strength and compression tests were carried out in order to
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11

Rey-de-Pedraza, V., F. Gálvez, and D. Cendón Franco. "Measurement of fracture energy of concrete at high strain rates." EPJ Web of Conferences 183 (2018): 02065. http://dx.doi.org/10.1051/epjconf/201818302065.

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The Hopkinson Bar has been widely used by many researchers for the analysis of dynamic properties of different brittle materials and, due to its great interest, for the study of concrete. In concrete structures subjected to high velocity impacts, initial compression pulses travel through the material leading to tensile stresses when they reach a free surface. These tensile efforts are the main cause of concrete fracture due to its low tensile strength compared to the compressive one. This is the reason why dynamic tests in concrete are becoming of great interest and are mostly focused in obtai
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12

Wang, Chong, Shuangyang Li, Tongwei Zhang, and Zhemin You. "Experimental Study on Mechanical Characteristics and Fracture Patterns of Unfrozen/Freezing Saturated Coal and Sandstone." Materials 12, no. 6 (2019): 992. http://dx.doi.org/10.3390/ma12060992.

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The thermomechanical behavior of coal and sandstone during excavation using the freezing method is a new challenge for coal mining and geotechnical engineering. In this paper, the influence of temperature on the mechanical characteristics and fracture patterns of two types of saturated rocks (coal and sandstone) were investigated. A series of laboratory tests, including the Brazilian tensile strength (BTS), uniaxial compressive strength (UCS), and triaxial compressive strength (TCS), were conducted at temperatures of 20, −4, −10, and −15 °C. The results indicated a significant increase in thei
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13

Journal, Baghdad Science. "Enhancement of the Tensile and the Compression Properties for Heat- Cured Acrylic Resin Denture Base Materials." Baghdad Science Journal 15, no. 4 (2018): 449–54. http://dx.doi.org/10.21123/bsj.15.4.449-454.

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This work aims to investigate the tensile and compression strengths of heat- cured acrylic resin denture base material by adding styrene-butadiene (S- B) to polymethyl methacrylate (PMMA). The most well- known issue in prosthodontic practice is fracture of a denture base. All samples were a blend of (90%, 80%) PMMA and (10%, 20%) S- B powder melted in Oxolane (Tetra hydro furan). These samples were chopped down into specimens of dimensions 100x10x2.5mm to carry out the requirements of tensile tests. The compression strength test specimens were shaped into a cylinder with dimensions of 12.7mm i
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14

He, Jun Zheng, Zai Quan Wang, Jin Shan Bai, and Li Ming Zhang. "Study on the Hoek-Brown Parameters under Loading and Unloading Triaxial Laboratory Tests." Advanced Materials Research 250-253 (May 2011): 2074–78. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.2074.

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Based on the brittle fracture theory of composite crack, and then overlapping the stresses at the end region of a crack under tension-shear or compression-shear failure conditions, the relationships of parameters in rock macroscopic and microscopic are determined by combining the Hoek-Brown failure criterion. There are many valuable conclusions through a series of loading and unloading triaxial laboratory tests on rock samples. The tension-shear fracture under the unloading triaxial tests at pre-peak is different from the compression-shear fracture under the loading triaxial tests. The Hoek-Br
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15

Sarim, Ali, Bo Ming Zhang, and Chang Chun Wang. "Tensile and Compression Behavior of Woven Glass/Epoxy Nano Composites Based on Spraying Methodology." Applied Mechanics and Materials 446-447 (November 2013): 27–31. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.27.

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Nanocomposites have been utilized increasingly because of their high strength, stiffness, toughness, and through-thickness properties. The incorporation of carbon nanofibers with a high aspect ratio and extremely large surface area into glass/epoxy polymer composites improve their tensile and compression properties significantly. Although a number of efforts have been made to improve various properties by mixing nanoparticles directly into resin, however, it could lead to high viscosities which create problems during processing. In this particular study, an attempt has been made to investigate
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16

Ru, Songnan, Zuozhou Li, Handong Liu, et al. "Experimental Study of a New Concrete Admixture and Its Function in Filling and Reinforcing Granite Fissures." Geofluids 2021 (September 3, 2021): 1–9. http://dx.doi.org/10.1155/2021/8587258.

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A concrete admixture with water retention and superhydrophobic properties was developed according to the high tensile strength, fissure resistance, and antiseepage requirements of concrete linings. Capillary water absorption, early-age anticracking, cube compressive strength, and splitting tensile tests were employed to study the effects of the new concrete admixture on the basic performance of concrete. On this basis, a triaxial compression test was conducted on granite fissures filled with concrete containing the admixture; the stress-strain and failure characteristics under different admixt
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17

Chang, Ze, Hongzhi Zhang, Erik Schlangen, and Branko Šavija. "Lattice Fracture Model for Concrete Fracture Revisited: Calibration and Validation." Applied Sciences 10, no. 14 (2020): 4822. http://dx.doi.org/10.3390/app10144822.

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The lattice fracture model is a discrete model that can simulate the fracture process of cementitious materials. In this work, the Delft lattice fracture model is reviewed and utilized for fracture analysis. First, a systematic calibration procedure that relies on the combination of two uniaxial tensile tests is proposed to determine the input parameters of lattice elements—tensile strength, compressive strength and elastic modulus. The procedure is then validated by simulating concrete fracture under complex loading and boundary conditions: Uniaxial compression, three-point bending, tensile s
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18

Blugan, Gurdial, Richard Dobedoe, I. Gee, Nina Orlovskaya, and Jakob Kübler. "Failure Behaviour of High Toughness Multi-Layer Si3N4 and Si3N4-TiN Based Laminates." Key Engineering Materials 290 (July 2005): 175–82. http://dx.doi.org/10.4028/www.scientific.net/kem.290.175.

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Multi-layer laminates were produced using alternating layers of Si3N4 and Si3N4+TiN. The differences in the coefficient of thermal expansions between the alternating layers lead to residual stresses after cooling. These are compressive in the Si3N4 layers and tensile in the Si3N4+TiN layers. The existence of these stresses in the laminates effect the crack propagation behaviour during failure. Different designs of laminates were produced with external layers under compression and tension exhibiting different failure mechanisms. Facture toughness was measured by SEVNB method. In systems with ex
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19

Smarzewski, Piotr. "Comparative Fracture Properties of Four Fibre Reinforced High Performance Cementitious Composites." Materials 13, no. 11 (2020): 2612. http://dx.doi.org/10.3390/ma13112612.

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This study investigates the fracture properties of high performance cementitious composites (HPCC) with four different types of fibres and with volume fraction content 3%. The four fibres are steel hooked end (S), polypropylene crimped (PP), basalt chopped (B), and glass (G) fibres. The tests were carried out in accordance with the RILEM recommendations. In order to examine the fresh properties of HPCC the slump flow tests were performed. Twelve fibre reinforced HPCC beam specimens with notch were cast and tested using central point loading experiments. In addition, experimental tests of the c
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20

Kotzem, Daniel, Lucas Beermann, Mustafa Awd, and Frank Walther. "Mechanical and Microstructural Characterization of Arc-Welded Inconel 625 Alloy." Materials 12, no. 22 (2019): 3690. http://dx.doi.org/10.3390/ma12223690.

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The objective of this work was to verify a relatively new fusion-based additive manufacturing (AM) process to produce a high-temperature aerospace material. The nickel-based superalloy Inconel 625 (IN625) was manufactured by an arc-based AM technique. Regarding microstructure, typical columnar-oriented dendritic structure along the building direction was present, and epitaxial growth was visible. The mechanical behavior was characterized by a combination of quasi-static tensile and compression tests, whereas IN625 showed high yield and ultimate tensile strength with a maximum fracture strain o
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21

YOUSIF, B. F. "EFFECT OF OIL PALM FIBRES VOLUME FRACTION ON MECHANICAL PROPERTIES OF POLYESTER COMPOSITES." International Journal of Modern Physics B 24, no. 23 (2010): 4459–70. http://dx.doi.org/10.1142/s0217979210056633.

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The effect of two types of oil palm fibres (bunch and fruit) on mechanical properties of polyester composites is examined in the current work considering different volume fractions. Tensile, compression, and flexural properties of the composites were investigated. In addition to that, tensile strengths were calculated theoretically using Hirsch model. Scanning electron microscope (SEM) was used to observe the fracture mechanism of the specimens. Single fibre pull-out tests were performed to determine the interfacial shear strength between polyester resin and both types of oil palm fibres. Resu
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22

Wang, Huanran, Canyuan Cai, Danian Chen, and Dongfang Ma. "Dynamic Constitutive Behavior and Fracture of Lanthanum Metal Subjected to Impact Compression at Different Temperatures and Impact Tension." International Journal of Nonlinear Sciences and Numerical Simulation 14, no. 1 (2013): 15–26. http://dx.doi.org/10.1515/ijnsns-2011-0191.

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Abstract Based on compressive tests, static on 810 material test system (MTS) and dynamic on the first compressive loading in split Hopkinson pressure bar (SHPB) tests at different strain rates and temperatures for Lanthanum (La) cylinder specimens, this study determined Johnson-Cook (J-C) type compressive constitutive equation of La metal. The determined compressive constitutive equation of La metal was calibrated in numerically simulating the recorded large deformations of La cylinder specimens generated by the multi-compressive loadings in SHPB tests. Based on tensile tests, static on MTS a
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23

Reis, Danieli A. P., Antônio Augusto Couto, N. I. Domingues Jr., Ana Cláudia Hirschmann, S. Zepka, and Carlos de Moura Neto. "Effect of Artificial Aging on the Mechanical Properties of an Aerospace Aluminum Alloy 2024." Defect and Diffusion Forum 326-328 (April 2012): 193–98. http://dx.doi.org/10.4028/www.scientific.net/ddf.326-328.193.

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Aluminum alloys have low specific weight, relatively high strength and high corrosion resistance and are used in many applications. Aluminum Alloy 2024 is widely used for aircraft fuselage structures, owing to its mechanical properties. In this investigation, Aluminum Alloy 2024 was given solid solution treatments at 495, 505, and 515°C followed by quenching in water. It was then artificially aged at 190 and 208°C. Subsequently, hardness measurements, tensile tests as well as impact and fatigue tests were carried out on the heat treated alloys to determine the mechanical properties. The tensil
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24

Wisnom, M. R. "The role of delamination in failure of fibre-reinforced composites." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1965 (2012): 1850–70. http://dx.doi.org/10.1098/rsta.2011.0441.

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The mechanisms by which delamination contributes to the failure of fibre-reinforced composites are reviewed. Through-thickness failure owing to interlaminar stresses is considered first, and the effect of delamination in impact and compression after impact. The way in which in-plane failure can occur by delamination and matrix cracks joining up to produce a fracture surface without the need to break fibres is considered next. Examples of quasi-isotropic laminates loaded at different off-axis angles, and with different numbers and thicknesses of ply blocks show large differences in unnotched te
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JABBAR HASSAN, Ammar, Taoufik BOUKHAROUBA, and Djamel MIROUD. "Friction welding of AISI 304: effect of friction time on micro-structure, micro-hardness and tension-compression properties." Acta Metallurgica Slovaca 26, no. 3 (2020): 78–83. http://dx.doi.org/10.36547/ams.26.3.631.

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During direct drive friction welding could relatively predicting the micro-structural and mechanical properties of friction-welded joints by controlling the welding conditions; friction time is an important coefficient that effects on these properties, present study focused on the effect of that time on micro-structural and mechanical phenomena during that process. The process achieved in different friction time, while welding joints investigated by macroscope, microstructure, scanning electron microscope, tensile, compression and micro-hardness tests. The micro-hardness tests were performd al
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26

Rozsypalová, Iva, Emília Bystrianska, Ondřej Koutný, Petr Daněk, Petr Frantík, and Zbyněk Keršner. "Pilot Fracture Tests of Special Fine-Grained Composites." Solid State Phenomena 322 (August 9, 2021): 3–8. http://dx.doi.org/10.4028/www.scientific.net/ssp.322.3.

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Mechanical fracture parameters were obtained for special fine-grained cement-based composites from three-point bending tests. A total of four sets of composite specimens were tested. All of the sets of composites were based on a general recipe and differ in the amount of high-strength aggregate and/or dispersed steel fibres present. Standardized prism specimens with a nominal size of 40 × 40 × 160 mm were used for the fracture tests after 131 days of curing. An initial notch was cut in the centre of the prisms with a depth approximately equal to one third of the specimen’s height. Three specim
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27

Xu, Hao, Wen Zhou, Runcheng Xie, et al. "Characterization of Rock Mechanical Properties Using Lab Tests and Numerical Interpretation Model of Well Logs." Mathematical Problems in Engineering 2016 (2016): 1–13. http://dx.doi.org/10.1155/2016/5967159.

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The tight gas reservoir in the fifth member of the Xujiahe formation contains heterogeneous interlayers of sandstone and shale that are low in both porosity and permeability. Elastic characteristics of sandstone and shale are analyzed in this study based on petrophysics tests. The tests indicate that sandstone and mudstone samples have different stress-strain relationships. The rock tends to exhibit elastic-plastic deformation. The compressive strength correlates with confinement pressure and elastic modulus. The results based on thin-bed log interpretation match dynamic Young’s modulus and Po
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28

Zhang, Xiao Min, Jian Mao, Yun Che, and Zhong Ke Zhang. "Investigations on the Fatigue Property of the High-Strength and Toughness 211Z Casting Aluminium Alloy." Applied Mechanics and Materials 423-426 (September 2013): 197–201. http://dx.doi.org/10.4028/www.scientific.net/amm.423-426.197.

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211Z is a new type of high strength and toughness Al-Cu-Mn casting aluminum alloy. With the aid of GPS-100 high-cycle fatigue testing machine and DDL100 multifunction tensile testing machine, conventional mechanics performance tests and high-cycle fatigue tests were carried out in this paper. The conventional mechanical property results show that the tensile strength is 477.5 MPa, the theory yield strength is 397.5 MPa and the elongation is 6.625%. Fatigue experiments were performed with load control at room temperature and R =-1 in ambient air. The tensile and compression fatigue strength is
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Jin, Jin, Ping Cao, and Jie Liu. "The Influence of Bridge Length on Failure Patterns of Specimens Containing Two Coplanar Cracks under Uniaxial Compression Load." Applied Mechanics and Materials 711 (December 2014): 410–13. http://dx.doi.org/10.4028/www.scientific.net/amm.711.410.

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Unixial compression tests have been conducted to investigate the influence of bridge length between two collinear cracks on the specimen strength and fracture patterns. Based on the local connectivity rate of cracks, the evolution of the fracture patterns of the bridge is illustrated. It can be concluded that the sensitivity of the strength to the bridge length is reduced as the connectivity rate, L, is higher than 0.8. The fracture pattern composed of tensile and shear fracture will be induced in rock bridges when the bridges are short. Wing cracks develop well as the distance between prefabr
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Chen, Chunhui, Zesen Peng, JiaYu Gu, Yaxiong Peng, Xiaoyang Huang, and Li Wu. "Exploring Environmentally Friendly Biopolymer Material Effect on Soil Tensile and Compressive Behavior." International Journal of Environmental Research and Public Health 17, no. 23 (2020): 9032. http://dx.doi.org/10.3390/ijerph17239032.

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The study of the high-performance of biopolymers and current eco-friendly have recently emerged. However, the micro-behavior and underlying mechanisms during the test are still unclear. In this study, we conducted experimental and numerical tests in parallel to investigate the impact of different xanthan gum biopolymer contents sand. Then, a numerical simulation of the direct tensile test under different tensile positions was carried out. The micro-characteristics of the biopolymer-treated sand were captured and analyzed by numerical simulations. The results indicate that the biopolymer can su
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31

Braszczyńska-Malik, Katarzyna N., and Marcin A. Malik. "Microstructure and Mechanical Properties of Hypo- and Hypereutectic Cast Mg/Mg2Si Composites." Materials 13, no. 16 (2020): 3591. http://dx.doi.org/10.3390/ma13163591.

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In this paper, the microstructure and mechanical properties of two magnesium matrix composites—a hypoeutectic with 1.9 wt% Mg2Si phase and a hypereutectic with 19 wt% Mg2Si compound—were analyzed. The investigated materials were prepared using the gravity casting method. Microstructure analyses of the fabricated composites were carried out by XRD and light microscopy. The tensile and compression strength as well as yield strength of the composites were examined in both uniaxial tensile and compression tests. The microstructure of the hypoeutectic composite was in agreement with the phase diagr
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32

Zhong, Zhibin, Ronggui Deng, Fang Lin, et al. "Study on Hysteretic Fracture of Naturally Cracked Surrounding Rock." Mathematical Problems in Engineering 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/569385.

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To determine the hysteretic fracture mechanism of the hard and naturally cracked surrounding rock mass, uniaxial and biaxial compression tests were performed on rhyolite specimens. In the biaxial compression test, displacements and strains around the U-shaped opening were monitored throughout to study the fracture pattern and distribution of stress. To compare with the experimental results, the finite difference codeFLAC3Dwas used to simulate a perfectly intact rock model with the same geometric and mechanical conditions in a continuum model. Stress-strain curves under uniaxial compression and
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33

Leacock, Alan G., Graham Cowan, Mark Cosby, Gregor Volk, David McCracken, and Desmond Brown. "Structural and Frictional Performance of Fused Deposition Modelled Acrylonitrile Butadiene Styrene (P430) with a View to Use as Rapid Tooling Material in Sheet Metal Forming." Key Engineering Materials 639 (March 2015): 325–32. http://dx.doi.org/10.4028/www.scientific.net/kem.639.325.

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Using additive layer manufacturing techniques, such as Fused Deposition Modelling (FDM), it is possible to produce complex geometry relatively quickly and cheaply. For this reason these processes offer intriguing possibilities for tooling in metal forming processes. A common material utilised in the FDM process is Acrylonitrile Butadiene Styrene (ABS). A series of compression and tensile tests were carried out on FDM ABS test specimens built in a range of orientations. The tensile tests were carried out until fracture and the specimen cross-sections analysed to investigate the cause of failure
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34

Huang, Zheng-Ming, X. C. Teng, and S. Ramakrishna. "Bending Behaviour of Laminated Knitted Fabric Reinforced Beams." Advanced Composites Letters 10, no. 5 (2001): 096369350101000. http://dx.doi.org/10.1177/096369350101000501.

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Four-point bending tests have been performed for the laminated beams reinforced in an epoxy matrix with six layers of knitted carbon fibre fabrics arranged in different orientations. It is seen that only partial layers of the beams have failed after the bending tests. The failures of all the beams were initiated from their bottom surface, i.e. due to an excessive tensile stress. Thus the failures were resulted from the matrix tensile fracture, as the epoxy tensile strength is lower than its counterpart in compression. The present experimental evidence suggests that only the use of a stress fai
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Zheng, Lifei, Dan Huang, Xiaoqing Li, and Xuan Hu. "Numerical Analysis of Fracture Behaviour on Marble Samples Containing Two Flaws." Advances in Civil Engineering 2020 (January 30, 2020): 1–15. http://dx.doi.org/10.1155/2020/6278289.

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Uniaxial compression tests were conducted on marble specimens containing two flaws. There are coplanar flaws and noncoplanar flaws. The inclination angle and spacing of flaws were considered of the coplanar flaws model, and the step angle and spacing of flaws were considered of the noncoplanar flaws model. Strength failure and crack coalescence behaviour were analysed in the paper. The crack evolution process containing microcrack initiation, coalescence, and failure is focused on the rock bridge coalescence and the extent of the pre-existing flaws. There are four forms of rock bridge coalesce
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Li, Xiaoshuang, Yingchun Li, and Saisai Wu. "Experimental Investigation into the Influences of Weathering on the Mechanical Properties of Sedimentary Rocks." Geofluids 2020 (December 8, 2020): 1–12. http://dx.doi.org/10.1155/2020/8893299.

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The time-dependent behaviors of the sedimentary rocks which refer to the altering of the mechanical and deformable properties of rock elements in the long-term period are of increasing importance in the investigation of the failure mechanism of the rock strata in underground coal mines. In order to obtain the accurate and reliable mechanical parameters of the sedimentary rocks at different weathering grades, the extensive experimental programs including the Brazilian splitting test, uniaxial compression tests, and direct shear tests have been carried out on the specimens that exposed to the na
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37

Arumugam, Soundhar, Jayakrishna Kandasamy, Ain Umaira Md Shah, et al. "Investigations on the Mechanical Properties of Glass Fiber/Sisal Fiber/Chitosan Reinforced Hybrid Polymer Sandwich Composite Scaffolds for Bone Fracture Fixation Applications." Polymers 12, no. 7 (2020): 1501. http://dx.doi.org/10.3390/polym12071501.

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This study aims to explore the mechanical properties of hybrid glass fiber (GF)/sisal fiber (SF)/chitosan (CTS) composite material for orthopedic long bone plate applications. The GF/SF/CTS hybrid composite possesses a unique sandwich structure and comprises GF/CTS/epoxy as the external layers and SF/CTS/epoxy as the inner layers. The composite plate resembles the human bone structure (spongy internal cancellous matrix and rigid external cortical). The mechanical properties of the prepared hybrid sandwich composites samples were evaluated using tensile, flexural, micro hardness, and compressio
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Hiroe, Tetsuyuki, Kazuhito Fujiwara, Hidehiro Hata, K. Watanabe, and Mitsuharu Yamamoto. "Mechanical Changes in Materials Caused by Explosive Precompression Shock Waves and the Effects on Fragmentation of Exploding Cylinders." Materials Science Forum 566 (November 2007): 237–42. http://dx.doi.org/10.4028/www.scientific.net/msf.566.237.

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Explosive driven rapid fracture in a structural body will be preceded by a compression process, and the compression effects on mechanical properties of the materials are clearly important to understand shock-induced failure such as spall or fragmentation phenomena. In this study, incident shock waves in plate specimens of aluminum A2017-T4 and 304 stainless steel are generated by plane detonation waves in the high explosive PETN initiated using wire-row explosion techniques, and the compressed specimens are successfully recovered without severe damages due to the reflected expansion waves with
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39

Ding, Yao, and Yu-Lei Bai. "Fracture Properties and Softening Curves of Steel Fiber-Reinforced Slag-Based Geopolymer Mortar and Concrete." Materials 11, no. 8 (2018): 1445. http://dx.doi.org/10.3390/ma11081445.

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Adding short steel fibers into slag-based geopolymer mortar and concrete is an effective method to enhance their mechanical properties. The fracture properties of steel fiber-reinforced slag-based geopolymer concrete/mortar (SGC/SGM) and unreinforced control samples were compared through three-point bending (TPB) tests. The influences of steel fiber volume contents (1.0%, 1.5% and 2.0%) on the fracture properties of SGC and SGM were studied. Load-midspan deflection (P-δ) curves and load-crack mouth opening displacement (P-CMOD) curves of the tested beams were recorded. The compressive and spli
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Su, Jun, Jun Lin Tao, Tang Li, and Yan Yin. "Compressive Properties of Steel Fiber Reinforced Ultra High Strength Concrete." Advanced Materials Research 250-253 (May 2011): 532–35. http://dx.doi.org/10.4028/www.scientific.net/amr.250-253.532.

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The compression tests were carried out to investigate the compression behavior of steel fiber reinforced ultra high strength concrete(SFRUHSC). Cubic and axial compression specimens were tested at room tempreture, in terms of load control. The result shouwed that the compression strength of 150×150×150mm3and 100×100×100mm3 cubic specimens is 108.4MPa and 94.7MPa, while the 100×100×300mm3 axial specimens’ is 73.4MPa. The above data demonstrated that the different size effect from that of strength of steel fiber reinforced concrete(SFRC), namely the strength of 100×100×100mm is larger than that
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41

Vidakis, Nectarios, Markos Petousis, Achilles Vairis, Konstantinos Savvakis, and Athena Maniadi. "On the compressive behavior of an FDM Steward Platform part." Journal of Computational Design and Engineering 4, no. 4 (2017): 339–46. http://dx.doi.org/10.1016/j.jcde.2017.06.001.

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Abstract Acrylonitrile–butadiene–styrene (ABS) is commonly used material in the fused deposition modeling (FDM) process. In this work, ABS and ABS plus parts were built with different building parameters and they were tested according to the ASTM D695 standard. Compression strength results were compared to stock ABS material values. The fracture surfaces of selected specimens were examined under a Scanning Electron Microscope (SEM), to determine the failure mode of the filament strands. Following this a Steward Platform part was tested under compression in a tensile testing machine. The experi
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Blazy, Julia, Łukasz Drobiec, and Paweł Wolka. "Flexural Tensile Strength of Concrete with Synthetic Fibers." Materials 14, no. 16 (2021): 4428. http://dx.doi.org/10.3390/ma14164428.

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Fiber reinforcement is currently most often used in floors, railway sleepers, prefabricated structural elements such as slabs, beams and tanks, and in small architecture elements. Designing elements or structures made of fiber-reinforced concrete requires knowledge of its basic mechanical parameters. In the case of concretes with metallic fibers, the literature can find many tests and standard guidelines regarding compressive, flexural, tensile strength and fracture energy. The properties of concretes with non-metallic fibers are slightly less recognized, especially concretes with new types of
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43

Wu, Jiehao, Haibo Wang, Qi Zong, and Ying Xu. "Experimental Investigation of Dynamic Compression Mechanical Properties of Frozen Fine Sandstone." Advances in Civil Engineering 2020 (September 8, 2020): 1–10. http://dx.doi.org/10.1155/2020/8824914.

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Aiming at the dynamic mechanical properties of weakly cemented fine sandstone in the rich water-bearing strata in western China under dynamic loading, a 50 mm rod diameter separation Hopkinson pressure bar (SHPB) test was used to study the Paleogene fine sandstone in a coal mine in Ningxia. The system carried out the impact compression tests of −15°C, −20°C, and −30°C and the average strain rate of 28 s−1–83 s−1 and obtained the dynamic compressive strength of the frozen fine sandstone specimens under different test conditions. The strain curve and the fracture morphology were analyzed for the
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Li, Chuanming, Nan Liu, and Wanrong Liu. "Experimental Investigation of Mechanical Behavior of Sandstone with Different Moisture Contents Using the Acoustic Emission Technique." Advances in Civil Engineering 2020 (December 8, 2020): 1–10. http://dx.doi.org/10.1155/2020/8877921.

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The moisture content is a critical factor tightly related to rock deformation and its failure process since it leads to a significant change in the physicomechanical properties of rock during the underground engineering construction. As a result, engineering construction accidents take place frequently. To figure out the influence of the moisture content on the physicomechanical properties of water-bearing rock and then effectively avoid engineering accidents, multiple tests including the uniaxial compression test, Brazilian splitting test, and the acoustic emission (AE) test were carried out
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Zhang, Qi, Dan Ma, Jiangfeng Liu, Kai Zhang, and Zhiqiang Fan. "Numerical Studies on the Failure Process of Heterogeneous Rock Material with Preexisting Fracture under Uniaxial Compression." Advances in Civil Engineering 2018 (August 16, 2018): 1–12. http://dx.doi.org/10.1155/2018/9203549.

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It is of vital importance to understand the failure processes of the heterogeneous rock material with different kinds of preexisting fractures in underground engineering. A damage model was introduced to describe the initiation and propagation behaviors of the fractures in rock. Reduced parameters were applied in this work because the microcracks in the rock were neglected. Then, the numerical model was validated through comparing the simulation results with the laboratory observations. Finally, a number of numerical uniaxial compressive tests were performed on heterogeneous rock specimens wit
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Tsikrikis, A., T. Papaliangas, and V. Marinos. "LABORATORY INVESTIGATION ON THE CORRELATION BETWEEN THE FRICTION ANGLE OF ROCK JOINTS AND THE CONSTANT MI OF THE HOEK AND BROWN CRITERION." Bulletin of the Geological Society of Greece 50, no. 2 (2017): 987. http://dx.doi.org/10.12681/bgsg.11803.

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A correlation between the non-dilational friction angle (φm) of rock discontinuities and the constant mi of the Hoek and Brown criterion for intact rock is investigated, using the results of a focus oriented laboratory program. The program consisted of two types of laboratory tests: a series of triaxial compression tests on intact rock samples for the determination of the constant mi and an independent series of direct shear tests on tensile fractures of the same rock types for the determination of the rock joint friction angle φm. Four typical rock types from Northern Greece were used: a gran
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Wang, Weichao, Mengmeng Wang, and Xiliang Liu. "Study on Mechanical Features of Brazilian Splitting Fatigue Tests of Salt Rock." Advances in Civil Engineering 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/5436240.

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The microtest, SEM, was carried out to study the fracture surface of salt rock after the Brazilian splitting test and splitting fatigue test were carried out with a servo-controlled test machine RMT-150B. The results indicate that the deviation of using the tablet splitting method is larger than that of using steel wire splitting method, in Brazilian splitting test of salt rock, when the conventional data processing method is adopted. There are similar deformation features in both the conventional splitting tests and uniaxial compression tests. The stress-strain curves include compaction, elas
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48

RIBEIRO, G. O., P. C. GUETTI, and P. SERNA. "Experimental study of the mechanical behavior of self-compacting concrete based on fracture mechanics." Revista IBRACON de Estruturas e Materiais 10, no. 3 (2017): 744–59. http://dx.doi.org/10.1590/s1983-41952017000300010.

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ABSTRACT Considering the physical nonlinearity of concrete and the fundamentals of fracture mechanics for quasi-brittle materials, the objective of this study was to determine the fracture energy and the length of the fracture process zone (FPZ) as well as the modulus of elasticity, the tensile strength and the compressive strength of self-compacting concrete (SCC) to characterize its mechanical behavior. A series of tests, including a three-point bending test of SCC and conventional vibrated concrete (CVC) specimens, with a notch at mid-span, and tensile and compressive tests were performed.
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49

Choi, Won-Chang, Kwon-Young Jung, Seok-Joon Jang, and Hyun-Do Yun. "The Influence of Steel Fiber Tensile Strengths and Aspect Ratios on the Fracture Properties of High-Strength Concrete." Materials 12, no. 13 (2019): 2105. http://dx.doi.org/10.3390/ma12132105.

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Steel fiber embedded in concrete serves to reduce crack development and prevent crack growth at the macroscopic level of the concrete matrix. Steel fiber-reinforced concrete (SFRC) with high compressive concrete strength is affected primarily by the dimensions, shape, content, aspect ratio, and tensile strength of the embedded steel fiber. In this study, double-ended hook steel fiber was used in SFRC with a concrete compressive strength of 80 MPa. This fiber was used for the study variables with two aspect ratios (64, 80) and tensile strength values up to 1600 MPa. The flexural performance of
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50

Lofaj, František, Vladimír Ivančo, and Péter Pál Varga. "Fracture of Thin Walled Translucent Polycrystalline Alumina (PCA) Tubes." Key Engineering Materials 409 (March 2009): 223–30. http://dx.doi.org/10.4028/www.scientific.net/kem.409.223.

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Room temperature fracture behavior of short thin walled translucent coarse-grained polycrystalline alumina (PCA) tubes was investigated under compression loading in radial direction using conventional mechanical tests combined with the finite element modelling (FEM). FEM indicated strongly inhomogeneous stress distribution with the maximum tangential tensile stresses in the centre of the inner surface of a tube and opposite to the line of loading. Another zone of tangential tensile stresses form on the outer surface of the tube and oriented perpendicularly to the loading direction. However, th
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