Damage Assessments of Ballistic Impact Behaviors of GLARE 5 (3/2) Beams with Various Stacking Sequences

Yaghoubi, A. Seyed; Liaw, Benjamin

doi:10.1007/978-1-4614-4238-7_65

Cited by 3 publications

(3 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is attributed to the mechanical properties of GLARE constituents and the associated micro-cutting mechanisms. The modulus of elasticity of Al2024-T3 is 72.2 GPa which is about 30 % greater than that of the S2/FM 94 epoxy is 54-55 GPa [33][34][35][36], and therefore can exhibit higher ductility. Moreover, the UTS (ultimate strain) of Al2024-T3 is 19 %, whereas the UTS of the glass/FM 94 epoxy prepreg is 3.5 %-4.7 % in fibre direction and 0.6 in the normal direction to the fibres [10].…”

Section: Holes Geometrical Analysismentioning

confidence: 99%

Multi-scale analysis of the damage and contamination in abrasive water jet drilling of GLARE fibre metal laminates

Sourd

Giasin

Zitoune

et al. 2022

Journal of Manufacturing Processes

View full text Add to dashboard Cite

Section: Holes Geometrical Analysismentioning

confidence: 99%

Multi-scale analysis of the damage and contamination in abrasive water jet drilling of GLARE fibre metal laminates

Sourd

Giasin

Zitoune

et al. 2022

Journal of Manufacturing Processes

View full text Add to dashboard Cite

“…Mechanical properties of unidirectional S2 Glass/FM 94 epoxy prepreg. [86][87][88][89][90] Mechanical property…”

Section: Experimental Machine Setup and Proceduresmentioning

confidence: 99%

Microstructural investigation and hole quality evaluation in S2/FM94 glass-fibre composites under dry and cryogenic conditions

Giasin

Barouni

Dhakal

et al. 2020

Journal of Reinforced Plastics and Composites

View full text Add to dashboard Cite

S2/FM94 glass fibre reinforced epoxy is an aerospace-grade composite currently bonded with aluminium alloys and installed in parts of the Airbus A380 fuselage. In addition to its abrasive and hard nature, S2/FM94 glass fibre is sensitive to thermal effects developed during the drilling process, and therefore using coolants becomes necessary. However, conventional oil and water-based coolants are not suitable for drilling of composites. Cryogenic coolants on the other hand are an attractive choice for machining composites and are environmentally friendly. In this study, a new environmentally friendly cryogenic cooling technique in a liquid nitrogen bath was used for the drilling of S2/FM94 glass fibre reinforced epoxy composite. The aim was to investigate the effect of drilling parameters and cryogenic cooling on cutting forces, surface roughness, hardness and delamination factor at hole entry and exit sides. The workpiece was drilled within a cryogenic bath. In this way, both cryogenic workpiece cooling and tool cooling were obtained. In addition, the drill geometry is fixed and only the cutting parameters (i.e. spindle speed and the feed rate) are varied under dry and cryogenic conditions. The results indicate that the spindle speed and cryogenic cooling had the most significant influence on the cutting forces and surface roughness parameters (Ra and Rz), while the use of cryogenic cooling had the most significant influence on increasing the hardness and size of delamination at entry and exit sides of the holes.

show abstract

“…Mechanical properties of S2-glass fibre prepreg and Al2024-T3[49][50][51][52] The symbols L and T stand for longitudinal (the rolling direction for the metal) and transverse directions respectively…”

mentioning

confidence: 99%

Machining GLARE fibre metal laminates: a comparative study on drilling effect between conventional and ultrasonic-assisted drilling

Giasin

Atif

et al. 2022

Int J Adv Manuf Technol

View full text Add to dashboard Cite

GLARE laminates are multi-layered metal-composite materials created from bonding sheets of metallic alloys with carbon or glass fibre layers. The application of hybrid-conventional machining processes such as ultrasonic-assisted drilling (UAD) is becoming of great interest to the aerospace industry due to its capability in reducing the cutting forces and tool wear which are directly responsible for drilling-induced delamination. There is rich literature on the conventional drilling (CD) of GLARE, but no work reported using UAD process. This study will fill this gap and investigate the UAD of GLARE laminates using an indigenously developed UAD system. The influence of spindle speed and feed rate on thrust force and surface roughness metrics (Ra and Rz) were investigated under CD and UAD regimes. The quality of the borehole and damage mechanisms in the laminate constituents was examined using scanning electron microscopy (SEM). The contribution of the drilling parameters on the measured outputs was further evaluated using the analysis of variance (ANOVA) statistical analysis. It was found that UAD resulted in a significant reduction in thrust force by up to 65% while surface roughness metrics Ra and Rz were unaffected by the type of drilling process used. SEM analysis showed irregular and fuzzier surfaces in glass fibre layers in holes machined using UAD due to the longitudinal vibration of the tool.

show abstract

Damage Assessments of Ballistic Impact Behaviors of GLARE 5 (3/2) Beams with Various Stacking Sequences

Cited by 3 publications

References 7 publications

Multi-scale analysis of the damage and contamination in abrasive water jet drilling of GLARE fibre metal laminates

Multi-scale analysis of the damage and contamination in abrasive water jet drilling of GLARE fibre metal laminates

Microstructural investigation and hole quality evaluation in S2/FM94 glass-fibre composites under dry and cryogenic conditions

Machining GLARE fibre metal laminates: a comparative study on drilling effect between conventional and ultrasonic-assisted drilling

Contact Info

Product

Resources

About