Analysis of Core-Candlestick Drill in Drilling Composite Materials

Abstract:

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Unlike ductile metals cutting mechanism, the interfaces between fiber and matrix as a transitional layer experience mismatched deformation in machining process. In general, the most frequent operation performed on composite materials is drilling with a twist drill to generate a hole owing to their versatility and low production cost. However, delamination is one of the most common defects in drilling laminated fiber-reinforced composites and can cause a significant reduction in the load-carrying capacity of a structure. At the periphery, using such special drills as saw drill, candlestick drill and core drill, reducible to causing delamination damage than the twist drill. Experimental results indicated that the diameter ratio and feed rate have statistical and physical significance on the thrust force obtained with a core-candlestick drill.

Info:

Periodical:

Key Engineering Materials (Volumes 419-420)

Edited by:

Daizhong Su, Qingbin Zhang and Shifan Zhu

Pages:

337-340

DOI:

10.4028/www.scientific.net/KEM.419-420.337

Citation:

C. C. Tsao et al., "Analysis of Core-Candlestick Drill in Drilling Composite Materials", Key Engineering Materials, Vols. 419-420, pp. 337-340, 2010

Online since:

October 2009

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Price:

$35.00

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