On the Mode II fracture toughness, failure, and toughening mechanisms of wholly thermoplastic composites with ultra-lightweight thermoplastic fabrics and innovative Elium® resin
2022
Bhudolia, Somen K. | Gohel, Goram | Vasudevan, Durga | Leong, Kah Fai | Gerard, Pierre
Current work presents the first investigation on the Mode II fracture toughness of room temperature curable acrylic Elium® resin and toughened Elium®IM with 10% weight acrylonitrile butadiene styrene (ABS) particle with different thermoplastic fabrics like Ultra-high molecular weight polyethylene (UHMWPE), Ultra-high molecular weight polypropylene (UHMWPP), and polyester. The testing methodology using doublers, performance under Mode II loading and understanding the failure and toughening mechanisms is deliberated. GIIC of UHMWPP/Elium®IM composite was found to be 33.3% higher than that of UHMWPP/Epoxy composite. Polyester/Elium® composites have 27.02% higher GIIC than Polyester/Epoxy composites while Polyester/Elium®IM composites exhibited the highest GIIC which was 17.76% higher than Polyester/Elium® composites. Fractography of toughened Elium®IM composites displayed significant resistance to crack propagation that generated a rough and shear deformed curved layer type of de-bonding surface due to the extra toughening provided by particles which generated the crack deflection and void resulting from cavitation of ABS particles.
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