Results 21 to 30 of about 3,382,481 (279)

Averaged strain energy density estimated rapidly from the nodal stresses by FEM for cracks under mixed mode loadings including the T-stress contribution

Fracture and Structural Integrity, 2019
The present contribution reviews a recently proposed method to rapidly estimate the averaged SED at the tip of short as well as long cracks under in-plane I+II and long cracks under out-of-plane I+III mixed mode loadings.
Giovanni Meneghetti, Alberto Campagnolo, Filippo Berto   +2 more
doaj   +3 more sources

A new Track of Fatigue crack growth in Aluminum Alloy (2219) under Cyclic Stresses

Journal of Techniques, 2020
A study of new Track of Fatigue crack growth in aluminum alloy (2219) under cyclic stresses has been made. It was found out that this crack grow and propagate in three phases, the first phase though the grain size (micro-structure short cracks(MSC ...
Abdullah Dhayea Assi
doaj   +1 more source

Research on evolution behavior of 42CrMo microscopic fatigue short crack based on microstructure effect of material

Advances in Mechanical Engineering, 2022
To investigate the causes of damage dispersion in fatigue life of alloy materials, fatigue tests on 42CrMo are carried out under microscope with the aid of a micro fatigue testing device.
Nan Xu, Zhiwei Fu, Yuan Wang, Jianhua Liu, He Wang   +4 more
doaj   +1 more source

Study on the stress field concentration at the tip of elliptical cracks

Reviews on Advanced Materials Science, 2022
The holes and defects in rock materials have a great impact on the mechanical properties and failure mechanism of rock, cracks often appear in the form of flat ellipses in natural rock mass, and the current research is still insufficient.
Yang Yan-Shuang, Cheng Si-Pei, Zhang Zhan-Rong, Yin Meng-Yu, Hou Jia-Wen   +4 more
doaj   +1 more source

Microstructure-explicit Chebyshev-enriched Paris law for short fatigue crack propagation in rolled AA2024-T351

Fracture and Structural Integrity
The classical Paris-Erdogan law describes long fatigue crack propagation but fails to capture the oscillatory behaviour of short cracks in microstructurally heterogeneous materials.
Taoufik Nasri, Adel Hamdi, Mohamed anouar Borgi   +2 more
doaj   +1 more source

Analysis of bimaterial interface cracks using the localized method of fundamental solutions

Results in Applied Mathematics, 2022
This short communication makes the first attempt to apply the localized method of fundamental solutions (LMFS), a newly-developed meshless collocation method, for fracture mechanics analysis of bimaterial interface crack problems.
Xiao Wang, Yan Gu, Mikhail V. Golub
doaj   +1 more source

Elastic-plastic finite element analyses of short cracks

, 1982
Stress and strain distributions and crack opening displacement characteristics of short cracks have been studied in single edge notch bend and centre cracked panel specimens using elastic–plastic finite element analyses incorporating both a non ...
Miller KJ, Wang TC(王自强)
core   +1 more source

A novel weight function for RMS stress intensity factor determination in surface cracks [PDF]

, 2010
This paper discusses the problem of stress intensity factor determination in surface cracks. In particular, the concept of root mean square stress intensity factors (RMS SIF) is discussed for the general class of semi-elliptical surface cracks.
Brennan, Feargal P., Chahardehi, Amir Ebrahim   +1 more
core   +1 more source

Fractographic Study on Naturally Initiated Short Fatigue Cracks in a Near-Lamellar TiAl Alloy at Room Temperature

Metals, 2019
Short crack phenomena are considered important for lamellar structures in γ-TiAl alloys and have been thoroughly investigated in the past. However, the short cracks in the previous studies were nearly all introduced artificially.
Shiyuan Wang, Yingzi Xi, Hangyue Li, Paul Bowen   +3 more
doaj   +1 more source

Influence of Residual Stresses on the Crack Initiation and Short Crack Propagation in a Martensitic Spring Steel

Metals, 2022
The crack initiation and short crack propagation in a martensitic spring steel were investigated by means of in-situ fatigue testing. Shot peened samples as well as untreated samples were exposed to uniaxial alternating stress to analyze the impact of ...
Anna Wildeis, Hans-Jürgen Christ, Robert Brandt   +2 more
doaj   +1 more source