Impact Response of Composites

2010 ◽  
pp. 193-210
Keyword(s):  
Composite Materials ◽  
Matrix Composite ◽  
Failure Mechanisms ◽  
Dispersed Phase ◽  
Brittle Matrix ◽  
Composite Failure ◽  
Foreign Objects ◽  
Thermoplastic Matrix ◽  
Brittle Matrix Composite ◽  
Rubber Toughened

Abstract As fiber-reinforced polymeric composites continue to be used in more damage-prone environments, it is necessary to understand the response of these materials when subjected to impact from foreign objects. This chapter provides an overview of the analysis methods for impact-damaged composites. It discusses the causes and effects of various failure mechanisms in composite materials. The failure mechanisms covered are brittle-matrix composite failure, tough-matrix composite failure, thermoplastic-matrix composite failure mechanisms, untoughened thermoset-matrix composite failure mechanisms, toughened thermoset-matrix composite failure mechanisms, particle interlayer-toughened composite failure mechanisms, and dispersed-phase, rubber-toughened thermoset-matrix composite failure mechanisms.

An application of random packing to the multiple fracture of composite materials

1994 ◽  
Vol 31 (2) ◽  
pp. 564-569
Author(s):  
Alan C. Kimber
Keyword(s):  
Composite Materials ◽  
Matrix Composite ◽  
Random Packing ◽  
Multiple Fracture ◽  
Brittle Matrix ◽  
One Dimensional ◽  
Brittle Matrix Composite

A one-dimensional packing approach is used to obtain limiting results for inter-crack distances after multiple fracture of a long brittle-matrix composite with continuous aligned fibres. The results may also be appropriate for applications of the Rényi car-parking model in which there is a reduced probability of cars parking bumper to bumper.

An application of random packing to the multiple fracture of composite materials

1994 ◽  
Vol 31 (02) ◽  
pp. 564-569
Author(s):  
Alan C. Kimber
Keyword(s):  
Composite Materials ◽  
Matrix Composite ◽  
Random Packing ◽  
Multiple Fracture ◽  
Brittle Matrix ◽  
One Dimensional ◽  
Brittle Matrix Composite

A one-dimensional packing approach is used to obtain limiting results for inter-crack distances after multiple fracture of a long brittle-matrix composite with continuous aligned fibres. The results may also be appropriate for applications of the Rényi car-parking model in which there is a reduced probability of cars parking bumper to bumper.

scholarly journals Physical modelling of failure in composites

2016 ◽  
Vol 374 (2071) ◽  
pp. 20150280 ◽  
Author(s):  
Ramesh Talreja
Keyword(s):  
Composite Materials ◽  
Failure Modes ◽  
Structural Integrity ◽  
Failure Mechanisms ◽  
Local Stress ◽  
Physical Modelling ◽  
Stress Fields ◽  
Systematic Analysis ◽  
Composite Failure ◽  
Failure Theories

Structural integrity of composite materials is governed by failure mechanisms that initiate at the scale of the microstructure. The local stress fields evolve with the progression of the failure mechanisms. Within the full span from initiation to criticality of the failure mechanisms, the governing length scales in a fibre-reinforced composite change from the fibre size to the characteristic fibre-architecture sizes, and eventually to a structural size, depending on the composite configuration and structural geometry as well as the imposed loading environment. Thus, a physical modelling of failure in composites must necessarily be of multi-scale nature, although not always with the same hierarchy for each failure mode. With this background, the paper examines the currently available main composite failure theories to assess their ability to capture the essential features of failure. A case is made for an alternative in the form of physical modelling and its skeleton is constructed based on physical observations and systematic analysis of the basic failure modes and associated stress fields and energy balances. This article is part of the themed issue ‘Multiscale modelling of the structural integrity of composite materials’.

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