Work Item
ASTM WK30580

New Guide for Development of Benchmark Solutions for Composite Delamination Growth Analysis

1. Scope

The Committee will develop standard test methods, practices, terminology, and guides; sponsor symposia; stimulate research; and exchange technical information pertaining to composite materials (primarily those with fibrous reinforcement), as well as to reinforcing fibers with a Young's modulus greater than 20 GPa (3x10(6) psi).

This Committee will develop standard specifications for composite materials used in civil structures under Subcommittee D30.10. Other subcommittees under this Committee will not develop standard specifications. All other subcommittees shall be unclassified, as they do not develop standard specifications.

The work of this Committee will be coordinated with other ASTM committees and other organizations having mutual interest.

Keywords

composite material; delamination; finite element analysis; fracture mechanics; benchmarking; virtual crack closure technique

Rationale

Delamination is the splitting, or separating, of the individual plies of a laminated composite material, and is a common mode of failure for composite structures. Having the ability to predict delamination propagation, onset and growth in the commercial finite element codes used by industry to design and certify composite structures will enable the use of analyses to reduce the amount of sub-component testing now required in the building block approach for certification of damage tolerant composite structures. By using a combination of test and analyses rather than testing alone, designs will be developed faster and less expensively, and certified more quickly, than is currently possible. As new approaches for analyzing composite delamination are incorporated in finite element codes, the need for comparison and benchmarking becomes important since each code requires specific input parameters unique to its implementation. The benchmark solutions may be used by finite element code developers to check their implementation or by code end users to calibrate the numerical input parameters required to obtain the correct results. Also analysts new to delamination onset and growth prediction based on finite element analysis may be using the benchmark solutions as an introduction and starting point to gain first hands on experience.

The title and scope are in draft form and are under development within this ASTM Committee.

Details

Developed by Subcommittee: D30.02

Committee: D30

Staff Manager: Melissa Marcinowski

Work Item Status

Date Initiated: 10-07-2010

Technical Contact: Ronald Krueger

Item: 000

Ballot:

Status: