BACKGROUND Scoliosis is a common spinal deformity that occurs often during adolescence. Previous studies suggested that adolescent idiopathic scoliosis (AIS) patients can have various aspects of their lives being affected, due to disease presentation and/or treatment received. It is important to define a reliable instrument based on which the affected patients' health-related quality of life ca...

Till now, different constitutive models have been applied to model the hot deformation flow curves of different materials. In this research, the hot deformation flow stress of API X65 pipeline steel was modeled using the power law equation with strain dependent constants. The results was compared with the results of the other previously examined constitutive equations including the Arrhenius eq...

Perlakuan Panas atau biasa disebut dengan Heat Treatment, merupakan suatu proses memanaskan sebuah material (logam) temperatur tertentu dan kemudian didinginkan menggunakan media (misal: oli, air, air garam) kecepatan pendinginan yang ditentukan. Penelitian ini perlakuan panas quenching tempering pada pipa baja karbon API 5L diameter 16 inci (406.4 mm) ketebalan 1.437 (36.5 mana sebelumnya ters...

El presente documento describe los efectos de carbonatos y bicarbonatos en la resistencia a corrosión para aceros API 5L X42 Grado B, dichos se sometieron tratamientos térmicos recocido, normalizado bonificado, luego compararlos con el material suministro buscando diferencias microestructurales, formación o observa mediante técnicas microscópicas SEM. Para esta investigación, realizaron ensayos...

The hydrogen embrittlement (HE) leads to severe steel degradation of mechanical properties. atoms diffuse into the and get positioned reversible irreversible trap sites. pipe transport oil gas needs be welded construct long-distance pipeline projects; thus, friction-stir welding (FSW) has proven an excellent alternative joining these pipelines. Therefore, this work assessed analyzed influence o...