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1. X-ray microtomography investigation of damage fields ahead of cracks in CT and SENT C-Mn steel samples EI 工程索引 NSTL国家科技图书文献中心

Kumar, Richi |  Besson, Jacques... -  《International Journal of Fracture》 - 2023,239(2) - 233~254 - 共22页 - 被引量:1

摘要:To reduce over conservative safety margins | , toughness may be assessed by Single Edge Notched Tensile |  (SENT) testing in addition to Compact Tension (CT | ) testing. Higher crack growth resistance is found during |  SENT testing compared to CT testing for the studied
关键词: Tomography |  Compact tension |  Single edge notched tensile |  Damage |  Quantification |  PIPELINE-STEEL |  DUCTILE |  EVOLUTION |  FRACTURE |  SIZE...

2. Analysis on early warning of coal sample failure based on crack development law and strain evolution characteristics EI 工程索引 NSTL国家科技图书文献中心

Xiong, Yu |  Yang, Shengli... -  《Engineering failure analysis》 - 2023,148 - ARTN 107170~ - 共20页 - 被引量:9

摘要:In order to achieve effective early warning of |  coal sample failure under uniaxial compression, the |  digital speckle technology is used to analyze the |  evolution process of the crack field and strain field of |  the specimen from the global and local aspects, and
关键词: Digital speckle |  Failure law and characteristics |  Crack growth |  Experimental strain analysis |  Failure warning |  ACOUSTIC-EMISSION |  UNIAXIAL COMPRESSION |  NUMERICAL-SIMULATION |  ROCK |  SANDSTONE...

3. Effects of Specimen Orientation and Heat Treatment on Microstructure and Crack Propagation Path of the IN718 Alloy Built by the Additive Manufacturing Process EI 工程索引 NSTL国家科技图书文献中心

Kim, Chanmi |  Park, Junho... -  《Metals and Materials International》 - 2023,29(6) - 1786~1795 - 共10页 - 被引量:1

摘要:The effects of the heat treatment and the |  specimen orientation relative to the building platform on |  the microstructural evolution and mechanical |  properties were investigated in an IN718 alloy built by the |  selective laser melting process. The specimens were built
关键词: Selective laser melting |  IN718 |  Microstructure |  Specimen orientation |  Heat treatment |  MECHANICAL-PROPERTIES |  BEHAVIOR

4. (109403)Numerical study of mechanical properties and microcrack evolution of double-layer composite rock specimens with fissures under uniaxial compression EI 工程索引 NSTL国家科技图书文献中心

Ma Q. |  Tan Y.... -  《Engineering Fracture Mechanics》 - 2023,289 - 1~13 - 共13页 - 被引量:36

摘要:Layered and heterogenous fissured rock masses |  are ubiquitous in nature. Fissures exert significant |  influence as release surfaces and nucleation sites for |  failure in layered rock masses. However, key mechanisms |  controlling microcrack initiation and extension in layered
关键词: Composite samples |  Layered rock mass |  Mechanical behaviour |  Pre-existing fissures |  Uniaxial compression

5. Use of modified Madou–Leblond model to predict crack initiation in low alloy steel specimens with different stress states NSTL国家科技图书文献中心

Kumar S. |  Samal M.K.... -  《Engineering Fracture Mechanics》 - 2023,277 - 108946~ - 共14页 - 被引量:2

摘要:? 2022 Elsevier LtdThis paper aims to predict |  the ductile fracture in low alloy steel specimens |  with pure tension, pure shear and combined shear | –tension type loading using modified Madou–Leblond (MML | ) porous plasticity model, proposed by the present
关键词: Ductile fracture and damage |  Lode angle |  Porous plasticity |  Shear localisation |  Stress triaxiality

6. Experimental and Numerical Investigation on Crack Propagation and Coalescence in Rock-Like Specimens with Fluid-Infiltrated Parallel Flaws EI 工程索引 NSTL国家科技图书文献中心

Wei, Chao |  Li, Shucai... -  《Rock Mechanics and Rock Engineering》 - 2023,56(3) - 1995~2015 - 共21页 - 被引量:2

摘要:Underground rock mass conditions are often |  complex, crack propagation and coalescence results in a |  reduction in rock strength and can cause brittle failure | . We study the influence of the fluid pressure and |  the lateral pressure on the propagation process of
关键词: Crack propagation |  Rock bridge coalescence |  Hydromechanical coupling |  Biaxial compression |  Tests and numerical simulation |  FINITE-ELEMENT-METHOD |  FRACTURE COALESCENCE |  UNIAXIAL COMPRESSION |  PREEXISTING FLAWS |  BEHAVIOR...

7. Experimental Investigation On Performance Of Prototype SGSP With Corrugated Bottom And Twisted Tapes NSTL国家科技图书文献中心

Kaibin Chu |  Zhengwei Zhu -  《International Journal of Materials Science and Technology》 - 2022,12(2) - 107~114 - 共8页

摘要:This paper deals with the technique of |  investigating the efficiency of salt gradient solar pond on |  the basis of an experiment performed at Heat engine |  lab. B.I.T. Sindri, Dhanbad, Jharkhand. The |  experiment has been performed on a prototype salt gradient
关键词: Salt Gradient Solar Pond |  Twisted tape |  Salinity |  Solar Energy

8. An X-FEM based framework for 3D fatigue crack growth using a B-spline crack geometry description SCIE Web of Science核心 EI 工程索引 NSTL国家科技图书文献中心

Hectors K. |  De Waele W. -  《Engineering Fracture Mechanics》 - 2022,261 - 108238~ - 共15页 - 被引量:8

摘要:This paper presents an X-FEM based iterative |  framework for numerical simulation of three-dimensional |  fatigue crack propagation. To accurately describe the |  crack geometry, B-spline curves and surfaces are used |  for the crack front and faces respectively. A new
关键词: B-spline |  Fatigue |  Fatigue crack growth |  Fracture simulation |  X-FEM

9. Numerical Simulation of Crack Propagation of Rock Specimens Containing Multiple Internal Cracks Under Uniaxial Tension ESCI 新兴来源引文索引 EI 工程索引 NSTL国家科技图书文献中心

Zhang, Zhitao -  《Geotechnical and geological engineering》 - 2022,40(7) - 3607~3618 - 共12页 - 被引量:2

摘要:In this study, the numerical simulation of |  rock specimens containing 3-D internal cracks was |  carried out using a finite element method based on M | -integral and adaptive mesh techniques. The effects of two |  different crack distribution forms and five crack surface
关键词: Uniaxial tension |  Multiple cracks |  3-D crack |  Numerical simulation |  Crack propagation |  GROWTH |  COALESCENCE |  FRACTURE |  FLAWS

10. УДАРНО-ВОЛНОВОЕ НАГРУЖЕНИЕ И ОТКОЛЬНОЕ РАЗРУШЕНИЕ ТЕКСТУРИРОВАННЫХ ВОЛЬФРАМОВЫХ ОБРАЗЦОВ: ЭКСПЕРИМЕНТ И МОДЕЛИРОВАНИЕ NSTL国家科技图书文献中心

А. М. Молодец |  А. С. Савиных... -  《Физика металлов и металловедение》 - 2022,123(5) - 554~561 - 共8页

摘要:Проведена аттестация микроструктурных |  характеристик исходных текстурированных образцов вольфрама | . Выполнены ударно-волновые эксперименты по измерению |  скорости свободной поверхности образцов. Определены |  значения динамического предела текучести и откольной
关键词: вольфрам |  текстура |  динамический предел текучести |  откольное разрушение |  ударные волны |  математическое моделирование |  гидрокод
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