Results 1 to 10 of about 652,868 (246)
Dynamic Crack Initiation Toughness of Shale under Impact Loading
Energies, 2019 The impact loading of a notched semi-circular bend (NSCB) specimen of outcrop shale in Changning Sichuan was carried out using a split Hopkinson pressure bar (SHPB) to study the effect of shale bedding on the dynamic crack initiation toughness.
Guoliang Yang +3 more
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Yantu gongcheng xuebao, 2023 The crack initiation and crack damage strengths of rock are the important indexes to evaluate the high stress failure of hard rock. Based on the Hoek triaxial compression tests and acoustic emission tests, a brittle rock-like model material that can ...
KONG Yang 1, RUAN Huaining 2, ZHANG Guirong 1, HE Ning 1, WANG Zhangchun 1
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Energy Reports, 2022 Aiming at the method of mining coalbed methane by fracturing with guide groove, the theoretical analysis and numerical simulation method are used to analyze the change law of coal mechanical properties and the crack propagation mechanism after the jet ...
Liangwei Li
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Crack initiation in a Ni-base superalloy [PDF]
Scripta Metallurgica, 1987 Oxide d ispers ion s t r e n g t h e n i n g (ODS) has been success fu l ly combined with -f' precipi ta t ion ha rden ing in the superal loy MA 6000. The development of MA 6000 is s t rong ly connected with new process ing techniques . The direct ional solidification process is used to produce columnar grains whereas ODS is a product of powder ...
INTVELD, AJH +2 more
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Investigation on the Crack Initiation of V-Shaped Notch Tip in Precision Cropping
Advances in Materials Science and Engineering, 2014 The crack initiation of V-shaped notch tip has a very important influence on the cross-section quality and the cropping time for every segment of metal bar in course of low stress precision cropping.
Lijun Zhang, Shengdun Zhao, Zhenwei Wang
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Metals, 2023 In the fatigue design of metallic components using the safe-life approach, fatigue crack initiation as a development of slip systems at the nanoscale, followed by microstructurally short crack growth, is critical for the onset of structural failure.
Peter I. Christodoulou +1 more
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Risk Estimation for LCF Crack Initiation [PDF]
Volume 7A: Structures and Dynamics, 2013 An accurate risk assessment for fatigue damage is of vital importance for the design and service of today’s turbomachinery components. We present an approach for quantifying the probability of crack initiation due to surface driven low-cycle fatigue (LCF).
Schmitz, Sebastian +3 more
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Materials & Design, 2020 Working service of structural materials at elevated temperatures generally leads to a significant decrease in their fatigue performance, thereby threatening the safety and reliability of engineering structures.
Xue Li +8 more
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SIMULATION OF FATIGUE CRACK INITIATION LIFE OF TC4 TITANIUM ALLOY BASED ON ITS MESOSCOPIC PROPERTIES
Jixie qiangdu, 2021 This paper presents that the prediction model of fatigue crack initiation life of TC4 titanium alloy,and the feasibility of the model in predicting the fatigue crack initiation life of TC4 titanium alloy is verified by experiments.
JIANG Ze +4 more
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MetalsThe role of notch stress and surface defects on fatigue crack initiation and small-crack propagation behavior has been investigated using groove simulation specimens.
Zuopeng Zhao, Xuteng Hu, Zhiwei Guo
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