Material failure mechanisms and damage models

1991 ◽  
Vol 40 (5) ◽  
pp. 531-536 ◽  
Author(s):  
A. Dasgupta ◽  
M. Pecht
Keyword(s):  
Failure Mechanisms ◽  
Material Failure ◽  
Damage Models

Materials Failure Logic Models—A Procedure for Systematic Identification of Material Failure Modes in Mechanical Components

1982 ◽  
Vol 104 (3) ◽  
pp. 626-634 ◽  
Author(s):  
D. L. Marriott ◽  
N. R. Miller
Keyword(s):  
Failure Modes ◽  
Planning Process ◽  
Service Failure ◽  
Failure Mechanisms ◽  
Material Failure ◽  
Cad System ◽  
Logic Models ◽  
Identification Technique ◽  
Mechanical Components ◽  
Systematic Identification

This paper addresses the problem of improvement of mechanical component reliability by the systematic identification of material failure mechanisms. Experience shows that, in many cases of service failure, failure was caused by a known mechanism which was overlooked, either by design, or elsewhere in the planning process. This paper describes one approach to designing mechanical components against failure by material deterioration, but may have application to other fields. It is based on a finding from the examination of case studies which shows that material failures follow logic structures which can be described by Boolean algebra expressions. These structures are defined as Material Failure Logic Models (MFLM’s), and can be used as a means of systematically identifying potential failure mechanisms in a complex process. The identification technique is based on the observation that MFLM’s are insensitive to the precise causes of the individual events. The paper deals primarily with problems of defining MFLM’s. Some examples of MFLM’s are given. A brief discussion is presented of a CAD system under development at the University of Illinois at Urbana-Champaign.

Modelling of impact damage zones in composite laminates for strength after impact

2012 ◽  
Vol 116 (1186) ◽  
pp. 1349-1365 ◽  
Author(s):  
R. Olsson
Keyword(s):  
Composite Laminates ◽  
Computational Models ◽  
Complex Geometry ◽  
Impact Damage ◽  
Failure Mechanisms ◽  
Constitutive Behaviour ◽  
Damage Models ◽  
Global Buckling ◽  
Tension And Compression ◽  
Damage Types

AbstractThis paper reviews findings on the type, morphology and constitutive behaviour of impact damage zones during loading after impact and their effect on the laminate strength and stability. The paper is limited to tape prepreg based monolithic laminates, although some similarities exist with impact damage in textile based laminates. Damage zones have a complex geometry with several damage types, which results in an interaction and competition between different failure mechanisms, e.g. local and global buckling, compressive failure, and delamination growth. Hence, simplified damage models may provide incorrect predictions of the failure load and failure mechanisms after impact. The constitutive behaviour of damage zones has been studied experimentally in tension and compression using an inverse method, and the results have been compared with detailed FE models of a generic impact damage. The paper is concluded with a discussion on analytical and computational models to predict the resulting strength of impacted laminates.

Material Failure Mechanisms of Alkaline Zn Rechargeable Conversion Electrodes

2021 ◽  
Vol 4 (4) ◽  
pp. 3381-3392
Author(s):  
Michael J. D’Ambrose ◽  
Damon E. Turney ◽  
Gautam G. Yadav ◽  
Michael Nyce ◽  
Sanjoy Banerjee
Keyword(s):  
Failure Mechanisms ◽  
Material Failure

Quantification of structural and material failure mechanisms across different length scales: from instability to brittle-ductile transitions

2012 ◽  
Vol 223 (9) ◽  
pp. 1937-1957 ◽  
Author(s):  
H. A. Mang ◽  
B. Pichler ◽  
T. Bader ◽  
J. Füssl ◽  
X. Jia ◽  
...  
Keyword(s):  
Failure Mechanisms ◽  
Material Failure ◽  
Length Scales

Sustained Loading Fracture and Strength of Concrete Modelled by Creep-Damage Interaction

2006 ◽  
Vol 324-325 ◽  
pp. 51-54
Author(s):  
Tao Xu ◽  
Gao Lin ◽  
Chun An Tang ◽  
Zhi Qiang Hu
Keyword(s):  
Process Analysis ◽  
Failure Process ◽  
Failure Mechanisms ◽  
Creep Damage ◽  
Material Failure ◽  
Creep Failure ◽  
Sustained Loading ◽  
Typical Time ◽  
Concrete Damage ◽  
In Series

The phenomenon creep fracture is well-known for concrete. In the present paper, the Material Failure Process Analysis (MFPA2D) model for concrete in the failure process is coupled in series with the time-dependence of the concrete damage and deformation. Further, the progressive creep failure of concrete specimens under constant tensile loading was numerically simulated and the typical time-dependent deformations: the transient creep, the steady-state creep and the accelerating creep were also represented. The numerical simulations indicate that the macroscopic creep failure is induced by clusters of micro-fractures on a mesocopic scale. The above numerical results offer us some theoretical indications and instructions to further investigate the instability failure mechanisms of engineering concrete structures in civil and hydraulic engineering.

scholarly journals Correction to Material Failure Mechanisms of Alkaline Zn Rechargeable Conversion Electrodes

2021 ◽  
Author(s):  
Michael J. D’Ambrose ◽  
Damon E. Turney ◽  
Gautam G. Yadav ◽  
Michael Nyce ◽  
Sanjoy Banerjee
Keyword(s):  
Failure Mechanisms ◽  
Material Failure
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