47 Result(s)

Article

The Effect of Stress Triaxiality on the Local Cleavage Fracture Stress in a Granular Bainitic Weld Metal

The local cleavage fracture stress σ_F measured at the cleavage initiation sites of a granular bainitic weld metal is only an apparent fracture parameter dependent on stress triaxialities at the local sites in the...

Hang Ma in International Journal of Fracture (1998)

Article

Theoretical simulations of a propagating crack subjected to in-plane stress wave loading by caustic method

The optical method of caustics for measuring the dynamic stress intensity factor in a transient process is investigated in this study. The transient full-field solutions of a propagating crack contained in an ...

Yi-Shyong Ing, Chien-Ching Ma in International Journal of Fracture (1997)

Article

A Study on Improving the Cold-Forming Property of Al-Mg-Li Alloy 01420

A technology to improve the cold-forming property of alloy 01420 has been studied in detail. The results show that the cold-forming property of alloy is improved, and a 64% of the limit of cold-rolling reducti...

Ma Longzhou, Cui Jianzhong, Zhang **aobo in Advanced Performance Materials (1997)

Article

Advances in the mechanism of cleavage fracture of low alloy steel at low temperature. Part II: Fracture model

The authors discuss in detail the existing cleavage fracture model including the physical model and the statistical model. Based on the discovery that a minimum distance for initiating the cleavage fracture wa...

J.H. Chen, G.Z. Wang, C. Yan, H. Ma, L. Zhu in International Journal of Fracture (1997)

Article

Advances in the mechanism of cleavage fracture of low alloy steel at low temperature. Part I: Critical event

The critical event of cleavage is variable for different types of specimens made of the same steel. In notched specimens (Charpy V or 4 PB) over a wide temperature range as low as -196°C, the critical event is...

J.H. Chen, G.Z. Wang, C. Yan, H. Ma, L. Zhu in International Journal of Fracture (1997)

Article

Advances in the mechanism of cleavage fracture of low alloy steel at low temperature. Part III: Local fracture stress σ

Local fracture stress values σ were measured accurately using 4PB, COD and Charpy V specimens. σ is the most stable parameter characterizing the fracture toughness of materials. It's scattering is analyzed to ...

J.H. Chen, G.Z. Wang, C. Yan, H. Ma, L. Zhu in International Journal of Fracture (1997)

Article

Transient response of a finite crack subjected to dynamic anti-plane loading

In this study, the transient response of a finite crack in an elastic solid subjected to dynamic antiplane loading is investigated. Two specific loading situations, a body force near the finite crack and a con...

Yi-Shyong Ing, Chien-Ching Ma in International Journal of Fracture (1996)

Article

The explicit formulations for the J_k vector in both isotropic and anisotropic cases

H. Ma, Y. H. Chen in International Journal of Fracture (1996)

Article

Interaction of a semi-infinite interface crack and multiple finite interface cracks

LiGuo Zhao, Hao Ma, YiHeng Chen in International Journal of Fracture (1996)

Article

Interaction of an interface macrocrack and multiple subinterface microcracks

LiGuo Zhao, Hao Ma, YiHeng Chen in International Journal of Fracture (1996)

Article

Dynamic fracture analysis of an inclined subsurface crack subjected to dynamic moving loadings

The transient response of a half-space containing a subsurface inclined semi-infinite crack excited by a dynamic moving antiplane loading on the surface of the half-space is investigated in this study. The sol...

Chien-Ching Ma, Lyang-Rung Hwang in International Journal of Fracture (1996)

Article

The effects of constraint on crack tip fields and fracture toughness

The detailed stresses, deformations and porosities in the vicinity of a blunting crack in different fracture specimens, Single Edge Notch (SEN), Three Point Bending (TPB) specimens, and Small Scale Yielding (S...

Fashang Ma in International Journal of Fracture (1995)

Article

Fracture angle of cracks of the two cracks interaction problem in a unidirectional fibre reinforced composite material

H. Ma, L. G. Zhao, Y. H. Chen in International Journal of Fracture (1995)

Article

The effects of geometry in different fracture specimens

Fashang Ma in International Journal of Fracture (1994)

Article

The measurement of J-R curves and J-integral values at crack initiations for metallic materials with three curve method of single specimen

The measurement of J-resistence curves and their proof values at crack initiations are carried out with the method of three curves from a single specimen by using 12CrlMoV, 1.25Cr0. 5MoSi, 16MnR steels and two we...

Ma Hang, Wang Zheng, Zhu Liang in International Journal of Fracture (1994)

Article

Calculation of the stress intensity factor for arbitrary finite cracked body by using the boundary weight function method

An efficient boundary weight function method for the determination of stress intensity factors in a two-dimensional mixed mode cracked body with arbitrary shape and subjected to arbitrary loading is presented ...

Chien-Ching Ma, I-Kuang Shen, Pwu Tsai in International Journal of Fracture (1993)

Article

The fracture toughness of different specimens

Fashang Ma in International Journal of Fracture (1993)

Article

Impact response of a finite interface crack with adhesive tips

Zhou Zhengong, Ma **ngrui, Zou Zhenzhu, Wang Duo… in International Journal of Fracture (1993)

Article

A damage equivalence method to correlate the geometry effects on elastic plastic fracture toughness

Fashang Ma in International Journal of Fracture (1993)