High strain rate performance of UHMWPE composites: Effect of moisture ingress and egress
Source abstract
Abstract
Abstract For the first time, the influence of moisture ingress and egress on the dynamic performance of commercial grades of Ultra-High-Molecular-Weight-Polyethylene (UHMWPE) composites is investigated. Two different grades of UHMWPE prepregs comprising Thermoplastic Elastomer (TPE) and Polyurethane (TPU) matrix were compression moulded and cylindrical specimens were cut-out for the high strain rate testing on a Split Hopkinson Pressure Bar (SHPB) apparatus. For identical incident energies, different strain rates were attained by the dry, wet and forced dried specimens of both the matrices. The experimental results indicate that the stress, strain and toughness significantly increase the pseudo properties with increasing rates of loading, irrespective of the type of conditioning process adopted. Moisture ingress reduced the strength of TPE and TPU matrix based composite by half and quarter of the strength of its dry composite. Moisture egress resulted in higher property enhancement of TPU based composite as compared to TPE based composite. The study thus substantiates the importance of moisture-proofing the composites meant for ballistic applications even from minor damage.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: High-Velocity Impact and Material Behavior · Energetic Materials and Combustion · Mechanical Behavior of Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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