Results 51 to 60 of about 654 (174)

A new proposal of effective stress and critical distance for fatigue at notches

MATEC Web of Conferences, 2014
The Theory of Critical Distance (TCD) and its associated methods have proved useful for predicting fatigue and fracture failure under stress gradients. This work reports the first analytical deduction of the effective stress and its critical distance in ...
Vallellano C., Navarro A., Chaves V.
doaj   +1 more source

A Stimulated Raman Scattering CMOS Pixel Using a High-Speed Charge Modulator and Lock-in Amplifier

Sensors, 2016
A complementary metal-oxide semiconductor (CMOS) lock-in pixel to observe stimulated Raman scattering (SRS) using a high speed lateral electric field modulator (LEFM) for photo-generated charges and in-pixel readout circuits is presented.
De Xing Lioe, Kamel Mars, Shoji Kawahito, Keita Yasutomi, Keiichiro Kagawa, Takahiro Yamada, Mamoru Hashimoto   +6 more
doaj   +1 more source

Field Observations of Decreasing Rock Fracturing Rates Over Geologic Time

Journal of Geophysical Research: Earth Surface, Volume 131, Issue 1, January 2026.
Abstract Rock fracturing regulates the topography, carbon cycle, geologic hazards, and infrastructure degradation of the Earth. Yet, there remains a paucity of constraints on long‐term fracturing behavior. Here we use field measurements of 2221 clasts across a range of environments and rock types to show that the number and total length of fractures in
M. Rasmussen, M. C. Eppes, A. Mushkin, P. G. Meredith, T. M. Mitchell, R. Keanini, J. Aldred, P. Andričević, S. Berberich, M. P. Dahlquist, S. G. Evans, M. Jain, M. Morovati, A. Layzell, Y. Nara, A. P. Rinehart, E. L. Sellwood, U. Shaanan   +17 more
wiley   +1 more source

Prediction and Experimental Validation of the Influence of T‐Stress on I–II Mixed‐Mode Fracture in Rock

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
Traditional fracture criteria only consider the singular terms in the Williams expansion and neglect higher‐order term coefficients, resulting in significant discrepancies between predicted and measured values. To advance the understanding of rock fracture mechanisms, this study introduces a generalized maximum tangential stress (GMTS) criterion by ...
Yongfeng Liu, Zhengxing Yu, Yongming Yin, Jinglin Wen, Arnab Biswas   +4 more
wiley   +1 more source

A Review on the Fracture Toughness and Long‐Term Durability of Fly Ash–Based Cementitious Composites

Advances in Materials Science and Engineering, Volume 2026, Issue 1, 2026.
Fly ash is widely used as a supplementary cementitious material to reduce Portland cement consumption and enhance the long‐term performance of cementitious composites. However, meaningful comparison of fracture toughness and durability reported across published studies remains challenging because of differences in specimen geometry, testing methods ...
Nancy Mweni Paul, Genson Murithi, Jackson Wachira Muthengia, Mohammad Rezwan Habib   +3 more
wiley   +1 more source

Impact of the Weld Geometry on the Stress Intensity Factor of the Welded T-Joint Exposed to the Tensile Force and the Bending Moment

Civil and Environmental Engineering, 2015
In this paper it is analyzed the welded T-joint exposed to the axial tensile force and the bending moment, for determining the impact of the weld geometry on the fracture mechanics parameters.
Djoković Jelena M., Nikolić Ružica R., Bujňák Ján   +2 more
doaj   +1 more source

Numerical Analysis of Curvilinear Fatigue Crack Growth and Plastic Zone Evolution in Haynes 230 Superalloy Under Variable Stress Ratios

Crystals
This paper presents a high-fidelity numerical simulation of curvilinear fatigue crack growth (FCG) through a modified Compact Tension (CT) specimen made of Haynes 230 nickel-based superalloy.
Yahya Ali Fageehi, Abdulnaser M. Alshoaibi   +1 more
doaj   +1 more source

Quasi-automatic simulation of crack propagation for 2D LEFM problems

Engineering Fracture Mechanics, 1996
A strategy for quasi-automatic simulation of propagation of arbitrary cracks in two-dimensional, linear elastic finite element models is presented. This strategy has been implemented in FRANC2D (FRacture ANalysis Code 2D). An underlying winged-edge data structure enables automatic local modifications of the mesh along the propagation path without loss ...
T.N. Bittencourt, P.A. Wawrzynek, A.R. Ingraffea, J.L. Sousa   +3 more
openaire   +1 more source

Unified fracture criterion for brittle 2D materials

npj Computational Materials
Two-dimensional materials (2DMs), possessing atomic-scale thickness, are prone to brittle fracture under loading conditions, which can lead to catastrophic failure.
Shenda Jiang, Israel Greenfeld, Lin Yang, Weilong Yin, Xiaodong He, H. Daniel Wagner   +5 more
doaj   +1 more source

STUDY ON THE SLOW CRACK GROWTH BEHAVIOR OF PE100 PIPE

Jixie qiangdu, 2019
In this article,fatigue crack growth（ FCG） experiments were conducted on cracked round bar（ CRB）specimens manufactured from PE100 pipes at different R-ratios.
DU ZhaoXin, DONG JunHua, GAO BingJun
doaj