Experimental, analytical, and finite element study of stress concentration factors for composite materials

What is it about?

The evaluation of stress concentration factors for composite materials. The digital image correlation method is utilized to evaluate the strain field and the displacement at the edge of the hole and obtain information about fracture mechanisms in the studied materials. The effect of the ratio of the hole diameter to its width (a/w ratio) on both gross and net stress concentration factors around the hole is investigated.

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Why is it important?

An innovative method is presented for measuring the stress concentration around a hole using the digital image correlation method. This method can provide a quicker and cheaper testing technique.

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