the current study conducted a finite element (fe) and experimental investigation on tubular channel angular pressing as a noble severe plastic deformation technique for producing ultrafine grained and nanostructure tubular components. to examine the effects of the tcap process on the strain distribution and deformation behavior, fe simulations were employed. the fe results demonstrated that equ...

over the last two decades, many researchers have developed a variety of stainless steel-based medical implant types,taking full advantage of nanostructuring technologies. in this paper the application, fabrication and development of nanostructured stainless steel based materials with new composition for medical implants will be discussed. it is well established that application of severe plasti...

Chen Phoon Ping, MBBS, FANZCA, FFPMANZCA, FHKCA, FHKAM, Dip Pain Mgt; Josephine WY Ip, MBBS, MS, FRCS (Ed), FHKAM (Ortho), Dip Hand Surg (FESSH); Joseph MK Lam, MBChB, FRCS (Edin), FCSHK, FHKAM (Surg); Vincent Mok, MBBS, FHKAM (Med), FRCP (Edin), MD (CUHK); Tsoi Tak Hong, MBBS, MRCP, FRCP (Edin), FRCP (Glas), FHKCP, FHKAM (Med); Wong Chun Por, MBBS, FHKAM (Med), FRCP (Lond), FRCP (Glas), FHKCP;...

The Multidisciplinary Panel on Neuropathic Pain Chen Phoon Ping, MBBS, FANZCA, FFPMANZCA, FHKCA, FHKAM, Dip Pain Mgt; Josephine WY Ip, MBBS, MS, FRCS (Ed), FHKAM (Ortho), Dip Hand Surg (FESSH); Joseph MK Lam, MBChB, FRCS (Edin), FCSHK, FHKAM (Surg); Vincent Mok, MBBS, FHKAM (Med), FRCP (Edin), MD (CUHK); Tsoi Tak Hong, MBBS, MRCP, FRCP (Edin), FRCP (Glas), FHKCP, FHKAM (Med); Wong Chun Por, MBB...

A finite element model of large strain deformation in machining is presented in the context of using machining as a controlled method for severe plastic deformation (SPD). Various characteristics of the large strain deformation field associated with chip formation, including strain, strain distribution, strain rate, and velocity field, are calculated using the model and compared with direct mea...

Plastic deformation of ARMCO iron processed by ECAP up to a maximum equivalent strain of sixteen (i.e., 1, 4, 8, and 16 ECAP passes) following route Bc was investigated by analyzing its microstructure and the stress-strain curves obtained after tensile tests at different levels of deformation. Three values of deformation (two in the plastic region taking into account the modified Crussard-Jaoul...

Non-linear quasi-static axisymmetric indentation problem is studied for comparitive computational analysis between elasto-plastic parameters and mechanical behaviour of homogeneous engineering metal materials. Mathematical model, based on deformation theory version of J2 theory, leads to quasi-static elasto-plastic contact problem with unknown contact domain, depending on the value of a indenta...

The tensile deformation response and texture evolution of aluminum alloyed Hadfield steel single crystals oriented in the h169i direction is investigated. In this material, the strain hardening response is governed by the high-density dislocation walls (HDDWs) that interact with glide dislocations. A microstructure-based visco-plastic self-consistent model was modified to account for mechanical...

171 Received July 26, 2013; revised and accepted October 7, 2013. Published online October 29, 2013; doi: 10.1620/tjem.231.171. *Lin-Chung Woung and Pai-Huei Peng contributed to this article equally. Correspondence: Tsang-Shan Chen, Department of Neurology, Sin-Lau Hospital, the Presbyterian Church in Taiwan, Eastgate Rd. Sec 1, Tainan 70142, Taiwan. e-mail: [email protected] A Nine-Year Popula...