The paper analyses how technology, market and policy issues condition the adoption of aluminum in the manufacturing of auto engine blocks in Brazil. Due to important weight savings, there is a clear tendency in the auto industry to change engine material from iron and steel to aluminum. This tendency has started in the triad market area, mostly because of scale issues, but the increasing global...

High-strength aluminum alloys are of increasing interest to the aerospace and automotive industry for critical high-strength components. B-pillars and door beams being of particular interest to the automotive industry Refill friction stir spot welding (RFSSW) offers an attractive means of joining these difficult-to-weld alloys since bulk melting is avoided and no exit hole is left. In this stud...

Ischemic heart disease (IHD) has been linked to exposures to airborne particles with an aerodynamic diameter <2.5 μm (PM2.5) in the ambient environment and in occupational settings. Routine industrial exposure monitoring, however, has traditionally focused on total particulate matter (TPM). To assess potential benefits of PM2.5 monitoring, we compared the exposure-response relationships between...

This paper reviews the advantages of substituting die-cast copper for aluminum in the motor rotor. This advance in motor technology has been long sought by the motor industry but short die life due to the high melting point of copper frustrated attempts to manufacture by pressure die casting. The nickel-base alloy hot die technology developed to solve the manufacturing problem is briefly review...

In this research, friction stir joining of aluminum-polypropylene/talc composite was investigated due to the numerous applications aluminum-polymer joints in automotive and aerospace industry. A novel tool design, including a rotary/stationary holder, used improve appearance mechanical performance lap by preventing mixed molten polymer aluminum particles from exiting stirred zone. Effect transv...

For more than 30 years, body-in-white development has been dominated by the need to achieve weight reduction while improving crash worthiness (Refs. 1, 2). Weight reduction is considered a primary key to improvements in fuel economy. One area of considerable development has been through materials substitution. Thirty years ago, automotive structural elements were made almost exclusively from re...

As part of exposure assessment for an ongoing epidemiologic study of heart disease and fine particle exposures in aluminum industry, area particle samples were collected in production facilities to assess instrument reliability and particle size distribution at different process areas. Personal modular impactors (PMI) and Minimicro-orifice uniform deposition impactors (MiniMOUDI) were used. The...

BACKGROUND AND AIM: The purpose of this study was to evaluate the sensitometric characteristics of Ultraspeed, Ektaspeed Plus and Insight dental radiographic films using manual and automatic processing systems. METHODS: In this experimental invitro study, an aluminum step-wedge was used to construct characteristic curves for D-, Eand F-speed radiographic films (Kodak Eastman, Rochester, USA). A...

Aparna Misra, Pankaj Kumar, Lokendra Kumar, Nikhil Ganesh, Mohit Gupta, S K Dhawan, M N Kamalasanan* & Subhas Chandra OLED Lab, Polymeric and Soft Materials Section, National Physical Laboratory, Dr K S Krishnan Road, New Delhi 110 012, India Physics Department, University of Allahabad, Allahabad 211 002, India Department of Applied Chemistry, Delhi College of Engineering, New Delhi 110 045, India