The study and optimization of material effectiveness as radiation shield is a mandatory step toward human space exploration. Passive radiation shielding is one of the most important element in the entire radiation countermeasures package. Crewmembers will never experience direct exposure to space radiation; they will be either inside some shelter (the spacecraft, a ‘base’) or in an EVA (Extra V...

The increasing trendof constructing componentsmade of composite laminates is due tothe flexibility intailoring their properties and high strength-to-weight ratio. Nevertheless, most practical components involve cutout features for fastening these cutouts could significantly reduce the strength laminate. Due to its importance, many studies were conducted study effect circular however, there lack...

Fracture resistance of polymer reinforced with short fibers consists a sum contributions from matrix and fiber fracture, de-bonding pull-out. The existing models for predicting dependence fracture toughness on structural variables were derived the commercially important volume fractions, i.e., vf≥0.1. In this contribution, modification model critical strain energy release rate, GIC, type, lengt...

in this study, the disadvantages of wood, which is widely employed in producing music instruments, are discussed. for example, high moisture sensitivity, low impact resistance, and time-consuming procedure as well as various properties of different species or in several parts of one specimen which are the main problems of wooden music instruments are extensively discussed in this paper. many ma...

Most failures develop as a result of lack resistivity information at the internal structure level during typical loading situations such shock load and impact load. Impact loads have significant on component’s structural performance. A careful, organized examination settings their side effects can reveal how well something withstand peak loads. First, this study investigated analyses nine varie...

Hybrid composites made of natural and synthetic fibers are stronger, lighter, cheaper, biodegradable, greener than conventional metals, they replacing metals. The primary objective the study was to examine mechanical properties interwoven hybrid composite laminates. Kevlar glass fiber used as reinforcement for this work. woven together using various weaving techniques. 1 × 1, 3 3, 5 patterns co...

The use of composites has increased exponentially in most industries, especially the aerospace industry; usage by almost 40% last 15 years. Aerospace components are often subject to high-impact loads, so it is important impact-resistant materials. Kevlar known for its resistance and commonly used as a fiber with various resins achieve desired properties. This paper mainly focuses on weaving bas...