Mechanical Properties

Gas permeability, solubility and diffusivity in 1,2-polybutadiene containing brookite nanoparticles

“…(26) and the data in Figs. 8 and 9, the maximum difference between f T F and f N F occurs at the maximum particle loadings, where f T F is 18% and f N F is 27%.…”

“…Pure gas permeability was determined using a constant volume/variable pressure apparatus [26,27]. A 13.8 cm 2 circular unmasked film was secured in the permeation cell.…”

“…Gas sorption isotherms in polymer and nanocomposite samples were determined using a high-pressure barometric sorption apparatus as described elsewhere [25,26]. Prior to begin sorption experiments, vacuum was applied to the apparatus for at least 18 h to degas the film under study.…”

Wedge tension test of a high-strength bolt of fully pearlitic high-carbon steel

“…Depending on the forming process, the mechanical strength can be improved, by minimizing the addition of new alloying elements to the conventional material and by eliminating the need for a secondary process such as heat treatment. Wiederhorn et al (2006) noted that the most difficult barrier to the use of high-strength steel is hydrogen embrittlement. They also reported a medium carbon steel with a low delayed fracture strength and a tensile strength of more than 1500 MPa.…”

Process design of high-strength bolt of fully pearlitic high-carbon steel

“…Kanao (1982) examined delayed fracture of highstrength bolts and reported that a high-strength bolt with tensile strength over 1200 MPa showed poor delayed fracture strength. Wiederhorn et al (2006) noted that the most difficult barrier to the use of high-strength steel is hydrogen embrittlement. They also reported low delayed fracture strength of a medium carbon steel with a tensile strength over 1500 MPa.…”