Sustainability scores can be used to assess manufacturing strategies, going one step beyond a standard economic assessment. This work uses previously proposed methodology evaluate two of the most common welding processes for aluminium alloys that are specifically in fabrication components transport industry based on their advantages generating lightweight and dimensionally efficient parts. For ...

The residual strain profiles were measured through the thickness of friction-stir welded (FSW) plates using neutron diffraction to study the relationship between the angular distortion and the residual strain distribution. Three different weld specimens were prepared from a 6061-T6 aluminum alloy with the purpose of separating the effects of the frictional heat and plastic deformation on the re...

Friction stir welding is gaining significance in typical joining applications day by day. Modeling and simulation of FSW has been a great challenge due to the complexity of the process. We are initiating an effort to review various modeling and simulation techniques mentioned in literature and to find the future scope and possibilities of new techniques.

Protection against decompression sickness (DCS) by acclimation to hyperbaric decompression has been hypothesized but never proven. We exposed rats to acclimation dives followed by a stressful "test" dive to determine whether acclimation occurred. Experiments were divided into two phases. Phase 1 rats were exposed to daily acclimation dives of hyperbaric air for 30 min followed by rapid decompre...

BACKGROUND This study examined cross-sectional data collected from substance-using female sex workers (FSW) and non-sex workers (non-SW) in Pretoria, South Africa, who entered a randomized controlled trial. METHODS Women who reported alcohol use and recently engaging in sex work or unprotected sex were recruited for a randomized study. The study sample (N = 506) comprised 335 FSW and 171 fema...

While brothel-based sex work is regulated by the Peruvian government, there is little data on STI risk factors reported by female sex workers (FSW). This study compared high risk behaviors among 120 Peruvian FSW from government regulated brothels with both clients and non-commercial partners. Our study found that 12% of FSW reported unprotected vaginal sex with clients (compared to 75% with non...

This paper describes HIV seroprevalence, knowledge of HIV transmission, and condom use among female sex workers (FSW) attending five specialized sexually transmitted disease (STD) clinics in Santiago, Chile. A short questionnaire with socio-demographic, AIDS knowledge, and condom-use variables was administered to 626 FSW. HIV seroprevalence was estimated with a blood test sent to the Chilean Pu...

Abstract Friction stir welding (FSW) is a solid-state process, which has significant role in processes for nonferrous alloys. Conventional arc aluminum alloys such as metal inert gas (MIG) and tungsten (TIG) are replaced by FSW. The effect of FSW parameters rotational traverse speeds, tool geometry, plunge depth, tilt angle, etc., on weld quality were considered several optimization studies. He...