Relevant bibliographies by topics / Defects of material

Contents

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

Academic literature on the topic 'Defects of material'

Author: Grafiati
Published: 28 May 2022
Last updated: 31 July 2025

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Journal articles on the topic "Defects of material"

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Ayoub, Irfan, Vijay Kumar, Reza Abolhassani, et al. "Advances in ZnO: Manipulation of defects for enhancing their technological potentials." Nanotechnology Reviews 11, no. 1 (2022): 575–619. http://dx.doi.org/10.1515/ntrev-2022-0035.

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Abstract This review attempts to compile the physics and chemistry of defects in zinc oxide (ZnO), at both, the fundamental and application levels. The defects, either inherent ones or introduced externally, have broadened the ZnO material field in various directions. The ZnO material exhibits many defect-attributed properties leading to broad technological applications: electronic and optoelectronic devices, sensors, optical components, ceramic industry, biomedical, catalysis, lightening, etc. Considering the huge defect-dependent technological scopes, the ZnO material is constantly engineere
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Chen, Dongkangkang, Zijie Sun, Bing Li, Lixia Xu, and Yaodong Yang. "Research on non-destructive testing technology for defects in carbon fiber reinforced composite materials." Journal of Physics: Conference Series 3009, no. 1 (2025): 012004. https://doi.org/10.1088/1742-6596/3009/1/012004.

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Abstract Carbon fiber-reinforced composite materials are the perfect choice for aerospace structural materials due to their excellent mechanical and thermophysical properties. However, defects generated during the manufacturing, processing, and load-bearing processes of carbon fiber composite materials are one of the main indirect causes of material failure. When the content of internal defects in the material increases, the mechanical properties of the composite structure significantly decrease, so it is very important to effectively and accurately detect defects in the material. This article
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McKernan, Stuart, and C. Barry Carter. "Planar defects in AIN." Proceedings, annual meeting, Electron Microscopy Society of America 47 (August 6, 1989): 432–33. http://dx.doi.org/10.1017/s0424820100154135.

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Aluminum nitride has recently become the subject of much interest as a technologically useful ceramic. The mechanical strength, high thermal conductivity and large electrical resistivity and a relatively small thermal expansion coefficient, make this material extremely well suited as a semiconductor substrate material. AlN has the hexagonal, wurtzite structure rather than the cubic structure of the more common semiconductors. It is also a polar material. The characterization of microstructural defects in this material is obviously necessary to the understanding of the materials properties.In s
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Li, Yong, Jinshuai Yao, Yan Fu, et al. "The effects of bubble defect parameters on the mechanical properties of polymer materials." Journal of Physics: Conference Series 2951, no. 1 (2025): 012068. https://doi.org/10.1088/1742-6596/2951/1/012068.

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Abstract As materials science continues to advance, accurately predicting and controlling the effects of microscopic defects on the macroscopic mechanical properties of materials has become a crucial research area. Traditional experimental methods currently face challenges in providing precise characterization at the microscopic scale, particularly regarding the accurate definition and quantification of geometric parameters associated with micro-bubble defects. Consequently, there is an insufficient understanding of their effects on material mechanical properties. This study integrates CT scan
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Wróbel, Andrzej, and Piotr Szymczyk. "AN APPLICATION OF A MATERIAL DEFECT DETECTION SYSTEM USING ARTIFICIAL INTELLIGENCE." International Journal of Modern Manufacturing Technologies 15, no. 3 (2023): 221–28. http://dx.doi.org/10.54684/ijmmt.2023.15.3.221.

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In recent years, detecting defects in materials has become an important element in many industries, such as automotive, construction, textile manufacturing, and many others. Material defects, such as stains, cracks, dents, and others, can affect the quality and durability of the product, which can have serious consequences for safety, performance, and product quality. Therefore, it is important to detect and remove material defects as quickly and accurately as possible. Traditional methods of detecting material defects, such as manual inspections or simple visual algorithms, can be unreliable
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Wu, Jun, and Zhangcan Huang. "A stable cellular automaton model for composite materials with defects." Industrial Lubrication and Tribology 70, no. 7 (2018): 1320–25. http://dx.doi.org/10.1108/ilt-03-2018-0087.

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Purpose As the internal defects (pore defect) of materials formed during the preparation of the composite material have important effects on wear process, the model has been improved to simulate it. Design/methodology/approach Materials with defects were simulated by an improved cellular automaton model which show changes in three-dimensional topography, temperature of surface and coefficient of friction (COF) during wear process. Findings It is found that defects increase temperature of material surface. Besides, the materials with little defects have a smaller COF than base materials, as the
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Touil, D. R., A. Daas, B. Helifa, A. C. Lahrech, and L. Ibn Khaldoun. "Simple Giant Magnetoresistance Probe Based Eddy Current System of Defect Characterization for Non-Destructive Testing." Advanced Electromagnetics 11, no. 2 (2022): 43–48. http://dx.doi.org/10.7716/aem.v11i2.1910.

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The purpose of this paper is to present a new giant magnetoresistance (GMR) sensor, in eddy current testing technique for surface defect detection, in conducting materials, we show that the GMR based eddy currents probe is more sensitive than the inductive probe. A flat coil mounted on ferrite pot used to produce an alternate magnetic field, which gives rise to eddy currents in the material under test. Aluminum plates use with defects have nominal depths, widths, and lengths. The defects scanned with the sensing axis perpendicular to the defect length. Two parameters extracted from the GMR out
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Seidman, David, and Donglu Shi. "Point Defects in Materials Part II: Applications to Different Materials Problems." MRS Bulletin 16, no. 12 (1991): 18–21. http://dx.doi.org/10.1557/s0883769400055299.

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This issue of the MRS Bulletin follows up on the November issue's five articles on point defect phenomena in a wide range of materials with five more articles on point defects. The present articles emphasize the behavior of different phenomena in various materials—nonstoichiometric metal oxides, intermetallic compounds, type II superconductors and semiconductors—in terms of fundamental properties of point defects. Again, point defects is the unifying theme but the emphasis shifts to material behavior.This issue begins with Marshall Stoneham's article on the roles theory plays in predicting and
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Qiao, Qiyun, Xiuyu Wang, Wenchao Liu, and Hongchun Yang. "Defect Detection in Grouting Sleeve Grouting Material by Piezoelectric Wave Method." Buildings 14, no. 3 (2024): 629. http://dx.doi.org/10.3390/buildings14030629.

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The construction defects in grouting sleeves can jeopardize the safety of precast reinforced concrete structures. Thus, efficient and accurate defect detection is critical in engineering construction. In this paper, a defect detection method based on piezoelectric wave theory was proposed. Two piezoelectric ceramics were arranged within the grouting sleeve. One piezoelectric ceramic was affixed on the top of the steel bar, while the other was embedded in the grouting material, serving as the driver and sensor, respectively. The compactness defects, air cavity defects, steel anchoring defects,
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Chang, Ming Kuen, Hua Sui Sun, and Jyun Cang Ciou. "Applying Ultrasonic Testing to Detect Hole Defect Near the Surface." Advanced Materials Research 194-196 (February 2011): 2054–57. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.2054.

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During materials manufacturing process will cause defects occasionally, if the defects located at near surface of material where the testing is not easy to implement. When the defects was stress by outside loading, it will grow up even become fracture, if the material apply ultrasonic testing then can increase material security to ensure structural safety. Practice material defect shape is variable and need complex product procedure. In this study, using wire cutting method to make practice defects specimen instead of the real flaws material, the specimen was made of medium carbon steel and al
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Dissertations / Theses on the topic "Defects of material"

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Prabhakar, Arati McGill T. C. "Investigations of deep level defects in semiconductor material systems /." Diss., Pasadena, Calif. : California Institute of Technology, 1985. http://resolver.caltech.edu/CaltechETD:etd-06212004-160535.

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Fällström, Karl-Evert. "Material parameters and defects in anisotropic plates determined by hologram interferometry." Doctoral thesis, Luleå, 1990. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-25759.

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Material parameters and defects in composite plates are determined in a non-contacting and nondestructive way by use of optical methods. Material parameters are determined from TV-holography images, and defects are detected by holographic interferometry with a double pulsed laser as the light source. A plate excited into harmonic vibration will be in resonance for certain frequencies. At each such frequency the plate vibrates in a certain manner, called a mode. Experimentally determined frequencies and shapes of these modes of vibration for rectangular orthotropic and anisotropic plates are co
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Purkar, Pranit Pramod. "Design optimization for obtaining zero defects in steel casting." Thesis, Tekniska Högskolan, Högskolan i Jönköping, JTH, Material och tillverkning, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-45663.

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This thesis is about the design of the gating system and selection of proper alloy for defects free (grate bar) casting. The gating system plays an important role in casting manufacturing process. The gating system has different elements like pouring cup, sprue, well, runner, riser, and ingates. The function of the gating system is to provide molten metal to the mould cavity through different gating system elements.  Casting is a metal shaping process which is used to produce a cast component. The casting process depends upon the material, type of pattern, mould and various techniques like san
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Wang, Xiaoxiang. "Structural and defects engineering of electrode materials for enhanced supercapacitors performance." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/208154/2/Xiaoxiang_Wang_Thesis.pdf.

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This PhD project aims to address the low energy storage issues of electrode materials for supercapacitors through morphological and defect engineering. The key scientific contribution in this thesis includes: revealing the superior intrinsic electrochemical properties of NiCo-sulfide to hydroxide/oxides, demonstrating a facial defect engineering to enhance electrochemical properties of CoxNi1-xS2 by low temperature plasma, developing a new method for synthesis of high-performance carbon material derived by biomass.
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Fanzon, Silvio. "Geometric patterns and microstructures in the study of material defects and composites." Thesis, University of Sussex, 2018. http://sro.sussex.ac.uk/id/eprint/72566/.

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The main focus of this PhD thesis is the study of microstructures and geometric patterns in materials, in the framework of the Calculus of Variations. My PhD research, carried out in collaboration with my supervisor Mariapia Palombaro and Marcello Ponsiglione, led to the production of three papers [21, 22, 23]. Papers [21, 22] have already been published, while [23] is currently in preparation. This thesis is divided into two main parts. In the first part we present the results obtained in [22, 23]. In these two works geometric patterns have to be understood as patterns of dislocations in crys
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Zadhoush, Ali. "The influence of defects on the mechanical properties of short fibre reinforced thermoplastics." Thesis, Brunel University, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.255673.

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Calder, Elizabeth May Mercer. "Computer modelling of point defects in hexagonal-close-packed metals." Thesis, University of Liverpool, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357405.

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Zöcke, Christine. "Quantitative analysis of defects in composite material by means of optical lockin thermography." Thesis, Metz, 2010. http://www.theses.fr/2010METZ026S/document.

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Les matériaux composites carbone-époxy connaissent un intérêt grandissant dans le domaine de l'aéronautique. Des tests de contrôle non-destructif permettent de détecter des défauts. Ce travail s'attache particulièrement au contrôle non-destructif de matériaux composite carbone-époxy par la thermographie optique lockin. Il élargit le domaine de l'analyse quantitative des mesures thermographiques. Les paramètres géométriques tels la profondeur, la taille et la forme des défauts sont déterminés dans des pièces en matériau composite anisotrope et globalement homogène. Dans un but d'évaluation quan
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Matěják, Vladimír. "Effects of Defects on Composite Structures Load Carrying Capacity: Delaminations at a Bi-Material Interface." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-255282.

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Kompozitní materiály se projevují komplexním způsobem porušování, které může být dále ovlivněno přítomností různých poruch plynoucích z výrobních processů nebo se vyskytujících v průběhu života součásti. Důkladné porozmění procesů porušování a jejich okolností je nezbytné pro navrhování kompozitních konstrukcí, jenž budou bezpečnější, trvanlivější a ekonomičtější. V první části disertační práce jsou popsány způsoby porušování kompozitů a uvedeny současné matematické metody pro analýzu a výpočet únosnosti. Dále jsou zde vyjmenovány hlavní druhy vad a stručně diskutován jejich vliv na vlastnosti
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Кашпор, К. А., та С. В. Прохоренко. "Апробація системи вузькозонного теплового збудження для оцінювання дефектності матеріалу". Thesis, Видавництво СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27601.

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Books on the topic "Defects of material"

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M, Predeleanu, ed. Computational methods for predicting material processing defects. Elsevier, 1987.

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McCluskey, Matthew D. Dopants and defects in semiconductors. Taylor & Francis, 2012.

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International Conference on Computational Methods for Predicting Material Processing Defects (1987 Cachan, France). Computational methods for predicting material processing defects: Proceedings of the International Conference on Computational Methods for Predicting Material Processing Defects, September 8-11, 1987, Cachan, France. Elsevier, 1987.

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Silber, Mark R. New Jersey's lemon law: Using the statute to help the consumer : seminar material. New Jersey Institute for Continuing Legal Education, 1994.

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Hayes, W. Defects and defect processes in nonmetallic solids. Wiley, 1985.

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P, George Easo, Materials Research Society, and Materials Research Society. Meeting Symposium BB., eds. Defect properties and related phenomena in intermetallic alloys: Symposium held December 3-5, 2002, Boston, Massachusetts, U.S.A. Materials Research Society, 2003.

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International, Seminar on Current Developments in Disordered Materials (1996 Kurukshetra India). Disordered materials, current developments: Proceedings of the International Seminar on Current Developments in Disordered Materials, held in Kurukshetra, India, January 1996 : CDDM-96. Transtec Publications, 1996.

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Wada, Kazumi. Defects in Optoelectronic Materials. CRC Press, 2022. http://dx.doi.org/10.1201/9780367811297.

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1950-, Wada K., and Pang Stella W, eds. Defects in optoelectronic materials. Gordon and Breach Science Publishers, 2001.

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Agulló-López, F. Point defects in materials. Academic Press, 1988.

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Book chapters on the topic "Defects of material"

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Faisal, Nadimul, Ömer Necati Cora, Muhammed Latif Bekci, et al. "Defect Types." In Structural Health Monitoring Damage Detection Systems for Aerospace. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-72192-3_3.

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AbstractThis chapter provides an overview of the common types of defects found in various structural materials and joints in aircraft. Materials manufacturing methods (including large-scale production) have been established in the aircraft industry. However, as will be seen in this chapter, manufacturing defects and defects during in-service conditions are very common across all material types. The structural material types include metals, composites, coatings, adhesively bonded and stir-welded joints. This chapter describes the defect types as a baseline for the description of their detection
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Kienzler, Reinhold, and George Herrmann. "Linear Elasticity with Defects." In Mechanics in Material Space. Springer Berlin Heidelberg, 2000. http://dx.doi.org/10.1007/978-3-642-57010-0_5.

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Mura, Toshio. "Material properties and related topics." In Micromechanics of defects in solids. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3489-4_7.

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Barakat, Nashida, and Alexandra Pehlken. "Data Defects in Material Flow Networks." In Information Technologies in Environmental Engineering. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-19536-5_7.

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Luo, Dan, Joseph M. Gattas, and Poah Shiun Shawn Tan. "Real-Time Defect Recognition and Optimized Decision Making for Structural Timber Jointing." In Proceedings of the 2020 DigitalFUTURES. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4400-6_4.

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AbstractNon-structural or out-of-grade timber framing material contains a large proportion of visual and natural defects. A common strategy to recover usable material from these timbers is the marking and removing of defects, with the generated intermediate lengths of clear wood then joined into a single piece of full-length structural timber. This paper presents a novel workflow that uses machine learning based image recognition and a computational decision-making algorithm to enhance the automation and efficiency of current defect identification and re-joining processes. The proposed workflo
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Naimark, O. B. "Energy Release Rate and Criticality of Multiscale Defects Kinetics." In Defect and Material Mechanics. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51632-5_12.

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Archer, Jim, and Dave Schneider. "Glaze Defects Caused by Raw Material Selection." In Whitewares and Materials: Ceramic Engineering and Science Proceedings, Volume 24, Issue 2. John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470294796.ch31.

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Weidner, Anja, Alexander Schmiedel, Mikhail Seleznev, and Horst Biermann. "Influence of Internal Defects on the Fatigue Life of Steel and Aluminum Alloys in the VHCF Range." In Multifunctional Ceramic Filter Systems for Metal Melt Filtration. Springer International Publishing, 2024. http://dx.doi.org/10.1007/978-3-031-40930-1_24.

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AbstractThis chapter concerns the influence of internal defects (i.e. nonmetallic inclusions, secondary phases and cast defects) on the fatigue lifetime of steel and aluminum alloys in the high cycle fatigue (HCF) and very high cycle fatigue (VHCF) regime. The detrimental effect of internal defects depends on multiple factors such as size, morphology, chemical composition, test temperature or position in the material. Specimens were tested after active and/or reactive melt filtration processes of the materials which served to influence the amount and size distribution of internal defects. Fati
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Chae, Seung Chul, and San-Wook Cheong. "Topological Vortex Defects in an Improper Ferroelectric." In Series in Material Science and Engineering. CRC Press, 2016. http://dx.doi.org/10.1201/9781315372532-14.

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Kröner, E. "Theory of Crystal Defects and Their Impact on Material Behaviour." In Modeling of Defects and Fracture Mechanics. Springer Vienna, 1993. http://dx.doi.org/10.1007/978-3-7091-2716-2_3.

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Conference papers on the topic "Defects of material"

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Race, Julia, and Stephen Peet. "Assessment of Corrosion in Low Toughness Pipe Material." In CORROSION 2002. NACE International, 2002. https://doi.org/10.5006/c2002-02088.

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Abstract Corrosion is an increasing problem in ageing pipelines world-wide, and the conditions under which a corrosion defect fails have been the subject of extensive world-wide research in the last 30 years. Various organisations have conducted full-scale tests on artificial and real corrosion defects, which have allowed the development of defect assessment criteria. In modern linepipe with high toughness, smooth corrosion defects will fail by ductile initiation and plastic collapse. In this case, the remaining strength of pipelines can be assessed using codified methods. However, for low tou
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Verma, Ajay Kumar, and Parveen Kumar Saini. "Analysis of Vibration Model to Study the Effect of Defect Sizes and Load on Stiffness, Contact Deformation, and Contact Force Variation in Deep Groove Ball Bearing." In 2024 8th International Conference on Materials Engineering and Nano Sciences & 2024 8th International Conference on Material Engineering and Manufacturing. Trans Tech Publications Ltd, 2024. http://dx.doi.org/10.4028/p-3oxxvp.

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In this paper, the vibration model has been suggested to study the local defects in the deep groove ball-bearing system. MATLAB is used to solve the equations governing the bearing system to simulate its vibration signals. The vibration model of the deep groove ball bearing system is constructed and takes into account the masses of the housing, balls, races, and shaft in addition to the damping at the ball-race interface and different-sized race defects. The effect of different defect sizes on the measured load distribution has been analyzed and discussed. The contact deformation and load dist
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Kurilova, U. E., E. A. Gerasimenko, I. A. Suetina, et al. "Biocompatible composite material for the regeneration of large tissue defects." In 2024 International Conference Laser Optics (ICLO). IEEE, 2024. http://dx.doi.org/10.1109/iclo59702.2024.10624284.

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Rajora, Ricky, Deepak Banerjee, Sonal Malhotra, Swati Devlival, Gotte Ranjith Kumar, and Aarju Rajora. "Predictive Modeling for Mold Material Defects Using CNN-Random Forest Fusion." In 2024 IEEE International Conference on Information Technology, Electronics and Intelligent Communication Systems (ICITEICS). IEEE, 2024. http://dx.doi.org/10.1109/iciteics61368.2024.10624825.

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KNIAZKIN, I. "Comprehensive analysis of waving defects in aluminium profile extrusion." In Material Forming. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-78.

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Abstract. Waving defects in extruded aluminium profiles pose significant challenges to achieving the stringent geometrical tolerances required in industries such as automotive manufacturing. These defects, driven by flow velocity and thermal gradient imbalances, often emerge during later stages of the extrusion process, complicating early detection and mitigation efforts. This study investigates the mechanisms underlying waving defects through comprehensive simulations of industrial and benchmark profiles using QForm UK software. Critical insights into defect formation were achieved by analysi
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EL-ALAMI, Zakariae. "Finite element modeling of buckle defects formation during RTM preforming of dry woven reinforcements." In Material Forming. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-50.

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Abstract. Mesoscopic defects, such as buckles and yarn sliding, arise in dry woven reinforcements during the preforming step of processes like the Resin Transfer Molding process. To study these defects, the LaMé laboratory developed an experimental device based on the Pullout test, which replicates the conditions leading to defect formation but does not fully explain the underlying mechanics. To address this, a Finite Element Model (FEM) is proposed to complement experimental data by providing detailed insights into stress, strain, and friction. While the model offers preliminary predictions o
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HAJJIOUI, El Arbi. "Ultrasonic monitoring and machine learning integration for layer-by-layer defect detection in PBF-LB/M." In Material Forming. Materials Research Forum LLC, 2025. https://doi.org/10.21741/9781644903599-7.

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Abstract. The quality of parts produced by PBF-LB/M processes, while promising, is often compromised by defects such as gas pores and lack of fusion. In response to the global push towards closed-loop systems for real-time defect detection and correction, in-situ correction during the PBF process is critical. Real-time monitoring enables the immediate detection and mitigation of defects, preventing the propagation of defective layers and preserving the integrity of the final component. The present study proposes a novel, cost-effective approach for real-time monitoring of the PBF process. Eigh
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Wang, Jier, Dianyin Hu, Long Zhang, Xi Liu, and Rongqiao Wang. "Durability Assessment of Additive Manufactured Compressor Disk Considering Material Defects Distribution." In ASME Turbo Expo 2018: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/gt2018-76465.

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Additive Manufacturing (AM) applications are poised to rapidly expand in aero-engines, providing opportunities to manufacture complex geometries which are unobtainable through traditional manufacturing techniques. The powder based AM process, selective laser melting (SLM), results in susceptibility to defects such as porosity, lack of fusion, and unmelted powder. These random defects often serve as fatigue crack initiation sites, thus influencing fatigue crack initiation and growth behavior. Consequently, the influence of random defects on high cycle fatigue performance for the AM titanium com
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RATH, L. "Behavior of volumetric core defects in friction extrusion of wire from Al-Cu alloy." In Material Forming. Materials Research Forum LLC, 2024. http://dx.doi.org/10.21741/9781644903131-84.

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Abstract. Friction extrusion describes the processing of metallic materials by inducing severe plastic deformation via frictional heating and shear strain. Rotational motion between die and feedstock is the key feature defining the potential of the process to generate consolidated extrudates with refined, homogenized microstructure. In this study, the effect of volumetric core defects on the material flow and properties of the extrudate is investigated, by processing from Al-Cu billets with a centric bore. Optical as well as scanning electron microscopy, X-ray microtomography and micro-hardnes
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Taraf, M., M. F. Ghanameh, M. Mliha Touati, O. Oussouaddi, and A. Zeghloul. "Numerical Simulation of Material Sub-Surface Defects in Rolling Contact Fatigue." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63654.

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To ensure the safety and of reducing the costs of maintenances in railways systems, it is necessary to evaluate the life prediction of fatigue crack initiation in rolling contact fatigue starting from the defects. The influence of defects on the rolling contact fatigue was studied, we simulated two types of geometry of defect (circular and elliptic) and also we studied the influence of defects clusters. The stresses and deformations were analyzed in the vicinity of the defect. Calculations were carried out with four levels of loading with the code of finite elements ABAQUS-standard (version 6.
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Reports on the topic "Defects of material"

1

Wang and Cheng. L52020 Extension of Strain Design Criteria to Buried HAZ Defects. Pipeline Research Council International, Inc. (PRCI), 2004. http://dx.doi.org/10.55274/r0011103.

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This project is a part of a multi-year effort intended to develop alternative defect acceptance criteria for pipelines experiencing high longitudinal strains.� A systematic investigation of various factors affecting the tensile strain limits of buried girth weld defects is conducted.� By using the concept of crack driving and apparent toughness, the baseline tensile strain limits of girth welds with buried defect are established for a wide range of pipe grades, wall thickness, defect size, and material toughness.� The relative influence of various factors affecting the strain limits of girth w
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Chauhan and Wood. L52007 Experimental Validation of Methods for Assessing Closely Spaced Corrosion Defects. Pipeline Research Council International, Inc. (PRCI), 2005. http://dx.doi.org/10.55274/r0011167.

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A full-scale burst test program was devised and agreed with the PRCI Materials Technical Committee Ad Hoc group. The work was undertaken over a two year period, 2003 and 2004. Due to budget constraints, only one pipe diameter and material was chosen for the test program. This was 24� (610 mm) outside diameter (OD) by 7.9 mm wall thickness, welded ERW steel linepipe of material API 5L grade B/X42. The criterion that defects separated by a distance of 6t or less will interact is over conservative. New rules for interaction, derived using non-linear finite element analyses and validated using ful
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3

Denys, R. M. L51712 Fracture Behavior of Large-Diameter Girth Welds - Effect of Weld Metal Yield Strength Part II. Pipeline Research Council International, Inc. (PRCI), 1994. http://dx.doi.org/10.55274/r0010121.

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Fitness for purpose girth defect assessments assume the presence of a single defect. This assumption is not always fulfilled. Welds may contain many small defects. These defects, when considered individually and without interaction, are generally innocuous. However, this may be a false conclusion as to the true strength or deformation capacity of the weld because neighbouring imperfections or defects may interact and may be more severe than each individual imperfection. When non-destructive examinations reveal multiple defects, a defect recategorisation procedure has to be applied to determine
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4

Howard, Marylesa, Sean Breckling, Arnulfo Gonzalez, and Ajanae Williams. Dynamic Measurements of the Structural Evolution of Material Defects at the Mesoscale. Office of Scientific and Technical Information (OSTI), 2020. http://dx.doi.org/10.2172/1724076.

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Kraus, R. H. Jr, M. Espy, and L. Atencio. Development of SQUID microscope for localization and imaging of material defects (NDE). Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/578665.

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Cohen, R., G. Stringfellow, R. Natesh, and J. Dunn. Quantitative analysis of defects in silicon: characterization of UCP, HAMCO, and microcrystalline material. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/5876111.

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7

Raengthon, Natthaphon. Cation vacancy defect in modified barium titanate ferroelectric ceramics. Chulalongkorn University, 2021. https://doi.org/10.58837/chula.res.2021.22.

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Development of advanced technologies for electronic applications, particularly aiming to increase energy efficiency and sustainability, are increasing in demand for regular usage. A majority of this development involves improvement of material's properties. Researcher has been continuously studied and developed new electronic material. Ferroelectric ceramic is one of many materials that is of interest, for example, lead-based (e.g. Pb(Mg₁/₃Nb₂/₃)O₃: PMN) and lead-free (e.g. Ba(Zr,Ti)O₃: BZT) materials. It is, however, known that the RoHS (Restriction of Hazardous Substances Directive) listed L
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Hayford. L51566 Ultralow Frequency Eddy Current Instrument for the Detection and Sizing of Stress Corrosion Cracks. Pipeline Research Council International, Inc. (PRCI), 1988. http://dx.doi.org/10.55274/r0010601.

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Eddy current testing has received only limited application to ferrous materials because the high permeability of the material in combination with the normally high frequency of the eddy current instrument results in a very small depth of penetration of the eddy currents into the material. The objectives of this research program were threefold. The first goal was to develop an eddy current instrument with frequencies low enough to penetrate pipeline steel. The second was to use the new instrument to develop techniques for locating stress corrosion cracks (SCC) on coated pipelines without requir
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Finch, Graeme, and Stuart Harmon. PR-670-183826-R01 Assessment of Science Behind LSM for Pipeline Integrity. Pipeline Research Council International, Inc. (PRCI), 2020. http://dx.doi.org/10.55274/r0011803.

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Integrity assessment of pipelines is vital to ensure that oil and gas pipes have adequate strength to prevent leaks and ruptures. Regular inspections are conducted to confirm safe operation conditions of pipelines. The industry's principle method for assessing pipelines is in-line inspection (ILI), involving the passing of a device along the inside of a pipe to assess the condition of the pipeline. ILI devices can be fitted with a number of sensors allowing various measurement parameters to be obtained simultaneously. Not all pipelines are suited to ILI for reasons such as small diameter, obst
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Chauhan, Vinod. PR-273-0323-R01 A Review of Methods for Assessing the Remaining Strength of Corroded Pipelines. Pipeline Research Council International, Inc. (PRCI), 2009. http://dx.doi.org/10.55274/r0010013.

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The objective of this report is to investigate failure pressure predictions made by common assessment methods used by the pipeline industry, such as ASME B31G, Modified ASME B31G, RSTRENG and others against recorded burst test pressures. The analysis consisted of a number of sensitivity studies or �cases�, representing different flow stress definitions and material properties. The assessment methods were applied to an extensive database of burst test results which includes the results of various tests conducted by GL on higher strength line pipe material (grade X80 and X100), which have previo
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