Researcher

Synthetic Fiber

Matrix

Operating Parameters

Findings

Arul, Vijayaraghavan [112]

Glass fiber

Plastic

· Conventional drilling

· Vibration-assisted twist drilling

· Delamination accorded in both techniques

· Conventional drilling-induced more delamination

Khashaba, El-Sonbaty [93]

Glass fiber

Epoxy

· Feed rate

· Spindle speed

· Drill diameter

· Delamination-free holes have not been obtained

· Peel-up and push-out delaminations have been obvious

· Delamination size increased with increasing feed

· Delamination size increased with increasing feed, spindle speed, and drill diameter

Shyha, Soo [20]

Carbon fiber

Polymer

· Number of holes

· feed rate

· Difficulties in machinability were presented

· The worn lip of the drill head was obvious