In this study, waste shells of African giant snail (Achatina achatina L.) were explored as candidates for asbestos-free non-carcinogenic brake pads. The results obtained showed that the density, Brinell hardness, and compressive strength shell (SS) pads superior to commercial sample used comparison. These properties found decrease with increase in particle size, following a negative index power...

Wood heat treatment is an attractive alternative to improve decay resistance of wood species with low natural durability. However, this improvement of durability is realized at the expense of the mechanical resistance. Decay resistance and mechanical properties are strongly correlated to thermal degradation of wood cells wall components. Mass loss resulting from this degradation is a good indic...

Abstract Nano-Al 2 O 3 dispersion-strengthened Cu20W composite was fabricated by vacuum hot-pressing sintering process. The electrical conductivity, relative density, and Brinell hardness were tested, respectively. gleeble-1500D thermomechanical simulator used to conduct isothermal compression with strain rates ranging from 0.001 10 s −1 the temperatures 650 950°C. microstructure of Cu–Al /20W ...

Abstract In recent years, the design and development of materials are strongly interconnected with digital technologies. this respect, efficient data management is building block material digitization and, in field science engineering (MSE), effective solutions for standardization sharing different resources needed. Therefore, ontologies applied that represent a map MSE concepts relationships b...

The purpose of the study was to measure Brinell hardness (HB) six wood species and evaluate ability recover depth imprint (self-re-deformation). Straight-grain clear samples ash, beech, alder, birch, iroko, linden were prepared. Measurements made in three main reference timber cross-sections: radial (R), tangential (T), axial/longitudinal (L) with two measuring loads 30 kG 100 (294.2 N 980.7 N)...

High-temperature treatment of wood is a useful method for improving certain physical characteristics, ensuring durability without biocides, and the performance when exposed to degradation agents. This work aims determine effects induced by heat performed industrially on ayous (Triplochiton scleroxylon K. Schum) from Cameroon, through study main mechanical characteristics. The at 215 °C three ho...

Abstract The presence of retained austenite in the hardening process tool steel often causes lower hardness compared to requirements and poor dimensional stability steel. purpose present research is determine relationships between tempering with without cryogenic treatment amount as-hardened D2 austenitizing temperature was 1020 °C, temperatures have variations 180 280 380 480 580 subzero has a...

The prediction of rock sawability is important in the cost estimation and the planning of the stone plants. An accurate estimation of rock sawability helps to make the planning of the rock sawing projects more efficient. Rock sawability depends on non-controlled parameters related to rock characteristics and controlled parameters related to properties of cutting tools and equipment. In the same...