Publications by authors named "A Krzak"

It is widely known that glass-epoxy laminates are renowned for their high stiffness, good thermal properties, and economic qualities. For this reason, composite materials find successful applications in various industrial sectors such as aerospace, astronautics, the storage sector, and energy. The aim of this study was to investigate the mechanical and thermal properties of composite materials comprising two different types of epoxy resin and three different hardeners, both at room temperature and under cryogenic conditions.

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Modern societal functioning is intricately intertwined with the omnipresence of plastics. Within industrial domains, composite materials featuring an epoxy matrix have garnered extensive utilization. However, using such glass fiber-reinforced polymer composites poses many environmental problems due to high energy consumption and pollutant emissions during production.

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It is commonly acknowledged that polymer composites in service are often subjected to not only intricate mechanical loads but also harsh environmental conditions. The mechanical and thermal properties of five particular composites are explored here. The composites are composed of laminates of glass cloth type "E" sheet infilled with a duroplastic matrix.

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Due to the high interest in the use of glass/epoxy laminates in aerospace applications, aviation, and as cryogenic tanks, it is crucial to understand the behavior of composites under challenging environmental conditions. Polymer composites are exposed to low temperatures, including cryogenic temperatures, which can lead to the initiation of microdamage. This paper investigates damage initiation/accumulation and its influence on the properties of cross-ply woven glass fiber epoxy composites at low temperatures compared to room temperature conditions.

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Unlabelled: Previous systematic reviews evaluating piezoelectric osteotomy are of critically low quality. We conducted a high-quality systematic review and meta-analysis to evaluate outcomes for piezoelectric versus conventional osteotomy.

Methods: The study protocol was published a priori (PROSPERO: CRD42021287877).

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