Results 21 to 30 of about 206 (115)

Research on Crack Propagation Mechanism of Silicon Nitride Ceramic Ball Bearing Channel Surface Based on Rolling Friction Experiment

Applied Sciences
The application feedback on existing silicon nitride ceramic bearings and RCF experimental research all indicate that the primary failure mode of silicon nitride ceramic bearings is material spalling on the contact surface. Spalling failure occurs due to
Pengfei Wang, Songhua Li, Yuhou Wu, Yu Zhang, Chao Wei, Yonghua Wang   +5 more
doaj   +2 more sources

Three-dimensional Fatigue Crack Propagation Analysis of Aircraft Thin-walled Structures Under Out-of-plane Loading

Hangkong gongcheng jinzhan, 2022
Some thin-walled structures in aircraft structures inevitably bear out-of-plane bending,affecting the safety of aircraft significantly.The FRACN3D-ABAQUS simulation method is adopted to carry out such research work.Effects of boundary restraint and ...
ZENG Weipeng, LU Songsong, LIU Binchao, LIU Hanhai, SUI Fucheng, BAO Rui   +5 more
doaj   +1 more source

Three‐Dimensional Stress Intensity Factor Correction Method Based on Thickness Size Effect

Advances in Materials Science and Engineering, Volume 2021, Issue 1, 2021., 2021
This paper presents the fatigue crack growth test of 7N01 aluminum alloy specimens with different thicknesses under three‐point bending. Moreover, the effect of specimen thickness on the fatigue crack growth life was analyzed. The influence mechanism of the thickness size effect on the stress intensity factor was explored.
Xiaochen Zhang, Hanwen Li, Weiying Meng, Tian Zhang, Zhenpeng Liu, Xiao Lv, Georgios I. Giannopoulos   +6 more
wiley   +1 more source

An Experimental and Numerical Investigation on the Initiation and Interaction of Double Cracks in Rocks under Hydromechanical Coupling

Advances in Materials Science and Engineering, Volume 2020, Issue 1, 2020., 2020
The growth of double cracks is the main factor leading to progressive rock failure under hydromechanical coupling. The initiation modes and interaction behaviors of double cracks were investigated by using laboratory tests, and the influences of water pressure were analyzed.
Jie Mei, Wanzhi Zhang, Hiroshi Yoshihara
wiley   +1 more source

Stress intensity factors and crack propagation path under mixed mode conditions [PDF]

Journal of Structural and Construction Engineering, 2016
Use of crack propagation principles based on SIFs (stress intensity factors) is among the most common methods of fracture mechanic engineering. SIF is an important parameter in fracture analysis. In analyzing elastic fracture, SIF reveals the stress near
Ramin Faridvand, Mohammad Taghi Kazemi
doaj   +1 more source

Numerical Simulation of Fracture Behavior of Brittle Solids under I/III Loading

Advances in Civil Engineering, Volume 2020, Issue 1, 2020., 2020
This study used numerical analysis to carry out a large number of numerical model calculations based on a new semicircular bend (SCB) model. Instead of existing numerical computation methods (J‐integral), the M‐integral method was used to calculate the mixed mode fracture parameters (KI, KII, and KIII), investigate the influence of the geometry and ...
Zhitao Zhang, Haijun Wang, Shuyang Yu, Fabio Di Trapani   +3 more
wiley   +1 more source

Fatigue Life Prediction of the Zirconia Fixture Based on Boundary Element Method

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
Zirconia grinding fixtures have been widely used in semiconductor industry to improve the quality and precision of the products. For maximizing the service life and minimizing the risks of accidental damage, it is critical to have a better understanding of the fatigue life of zirconia grinding fixtures.
Y. W. Wang, J. J. Ye, W. P. He, G. G. Cai, B. Q. Shi, Jiawei Xiang   +5 more
wiley   +1 more source

Study on main failure modes of multiple-holes structures based on branch-bound method

Xibei Gongye Daxue Xuebao, 2022
Aiming at the typical five-hole structure on the aircraft skin, combined with the failure criterion of multi crack structure and considering the random factors affecting the residual life distribution of multiple crack structure, this paper applies the ...
XIE Wei, ZHANG Yadan, MA Zehua, FENG Jinrong, WU Yu   +4 more
doaj   +1 more source

Crack propagation simulations for the Koelnbrein-Dam [PDF]

, 2005
Die Arbeit befasst sich mit der österreichischen Bogenstaumauer Kölnbrein, die während des Ersteinstaus geschädigt wurde. Diese Schäden, sowie mögliche Ursachen sind anhand von Literaturquellen dokumentiert.
Hollerbuhl, Lutz
core   +2 more sources

Numerical Simulation on Crack–Inclusion Interaction for Rib-to-Deck Welded Joints in Orthotropic Steel Deck

Metals, 2023
Weld defects such as porosity, inclusion, burn-through, and lack of penetration are difficult to detect and control effectively in an orthotropic steel deck (OSD), which will be a fatigue crack initiation site and lead to several fatigue cracking.
Yuan Luo, Xiaofan Liu, Fanghuai Chen, Haiping Zhang, Xinhui Xiao   +4 more
doaj   +1 more source