Results 31 to 40 of about 520,011 (274)

Assessment of 3D Short Crack Closure in Ti-6Al-4V Alloy Utilizing Synchrotron X-ray Microtomography [PDF]

MATEC Web of Conferences, 2020
Synchrotron X-ray microtomography was utilized to observe the complex 3D crack morphology and the closure behavior of a short crack in Ti-6Al-4V alloy. The aim of the study was to investigate the effect of the crack path evolution on the 3D short crack ...
TUBEI Valary, HASSANIPOUR Meysam, HIRAYAMA Kyosuke, TODA Hiroyuki, TAKEUCHI Akihisa, UESUGI Kentaro   +5 more
doaj   +1 more source

Study on closing and cracking stress calculation method of fractured rock

Frontiers in Earth Science, 2023
Determining the characteristic stress intensity according to the rock stress-strain curve is significant significance for rock engineering. Nowadays, there are relatively mature methods for determining peak stress and damage stress.
Yue Qiang, Gang Liu, Changsi Xia, Shaohong Li, Li Li, Dongsheng Zhao, Ling Zhou, Longfei Cheng   +7 more
doaj   +1 more source

Size effects on residual stress and fatigue crack growth in friction stir welded 2195-T8 aluminium - Part I: Experiments [PDF]

, 2011
Residual stress fields were measured in three different sizes of Compact-Tension (C(T)) and eccentrically loaded single edge notch (ESE(T)) specimens containing transverse or longitudinal welds. The effect of size on residual stress profiles was studied.
Irving, Phil E., P. Staron, T. Fischer, Ma, Yu E., Staron, P., Fischer, T., P.E. Irving, Yu E. Ma   +7 more
core   +1 more source

The Evaluation of Front Shapes of Through-the-Thickness Fatigue Cracks

Metals, 2021
Fatigue failure of structural components due to cyclic loading is a major concern for engineers. Although metal fatigue is a relatively old subject, current methods for the evaluation of fatigue crack growth and fatigue lifetime have several limitations.
Behnam Zakavi, Andrei Kotousov, Ricardo Branco   +2 more
doaj   +1 more source

Study on Fracture Behavior of GH4169 Superalloy Considering Crack Closure Effect: Combining Numerical Modeling and BSL 3D DIC

Applied Sciences
As a critical aerospace structural material, the fatigue crack propagation behavior and fatigue life of the nickel-based GH4169 superalloy are directly related to the service safety of engineering components.
Zechang Li, Bin Kuang, Bin Wang, Xing Sun, Xinlong Yang, Bo Liu, Qihong Fang, Huimin Xie, Wei He, Yanhuai Ding   +9 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

FEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa, Konstantinos Makryniotis, Theofani‐Iosifina Sousani, Evangelos Topakas, Vangelis Daskalakis, Maria Dimarogona   +5 more
wiley   +1 more source

Fail-safe design of integral metallic aircraft structures reinforced by bonded crack retarders [PDF]

, 2009
This paper presents an investigation on the effectiveness of crack growth retarders bonded to integral metallic structures. The study was performed by both numerical modelling and experimental tests.
Irving, Phil E., Figueroa-Gordon, D, Allegri, Giuliano, Irving, PE, Figueroa-Gordon, Douglas J., Allegri, G, Boscolo, Marco, Zhang, X, Zhang, Xiang, Boscolo, M   +9 more
core   +1 more source

Septin 9 PB domains coordinate centrosome positioning and microtubule acetylation to control epithelial polarity

FEBS Letters, EarlyView.
Septin 9 polybasic domains couple phosphoinositide‐rich membrane binding to centrosome positioning, Golgi organization, and microtubule acetylation to control epithelial polarity. Their loss disrupts this axis, causing centrosome mispositioning, Golgi fragmentation, reduced microtubule acetylation, and polarity inversion via upregulation of the ...
Ting ting Cai, Mohyeddine Omrane, Nassima Benzoubir, Didier Samuel, Ama Gassama‐Diagne   +4 more
wiley   +1 more source

Improved computation method in residual life estimation of structural components [PDF]

Theoretical and Applied Mechanics, 2013
This work considers the numerical computation methods and procedures for the fatigue crack growth predicting of cracked notched structural components.
Maksimović Stevan M., Maksimović Katarina S.   +1 more
doaj   +1 more source

Degradation mechanism of the von Willebrand factor A2 domain by nattokinase

FEBS Letters, EarlyView.
Nattokinase, a natto‐derived protease, exhibits potent antithrombotic effects. This study demonstrates that nattokinase directly cleaves the von Willebrand factor (vWF) A2 domain in vitro. Unlike the native regulator ADAMTS13, nattokinase degrades folded vWF independently of shear stress.
Ryuichi Hyakumoto, Masatomo So, Ayako Furukawa, Kenji Sugase   +3 more
wiley   +1 more source