Investigation of surface roughness and delamination damage of HFRP composite during drilling
This research aims to optimize the drilling parameters of hybrid fiber-reinforced polymer (HFRP) composites made using a novel stacking sequence of carbon and glass fibers, with a focus on reducing delamination and surface roughness key defects that compromise structural integrity in industrial appl...
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| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2025-07-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/16878132251358905 |
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| Summary: | This research aims to optimize the drilling parameters of hybrid fiber-reinforced polymer (HFRP) composites made using a novel stacking sequence of carbon and glass fibers, with a focus on reducing delamination and surface roughness key defects that compromise structural integrity in industrial applications. The study employed vacuum infusion molded HFRP laminates and investigated the effects of drill bit material (HSS and Carbide), spindle speed (400–1000 rpm), and feed rate (0.1–0.8 mm/rev) using a Taguchi L 32 orthogonal array. A hybrid optimization approach combining Grey Relational Grade (GRG), Principal Component Analysis (PCA), and Signal-to-Noise (S/N) ratio was used to evaluate multi-response outputs. ANOVA results revealed that feed rate and spindle speed significantly influence delamination, contributing 27.35% and 28.29%, respectively, while the drill bit material had the highest effect (64.01%) on surface roughness. The optimized parameters carbide drill bit, 630 rpm spindle speed, and 0.8 mm/rev feed rate achieved minimal delamination and surface irregularities. This study provides practical guidance for high-precision drilling of HFRP composites in aerospace, automotive, and structural industries. |
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| ISSN: | 1687-8140 |