The study involves the evaluation of deep drawing process using two non edible oils, Pongam (Pongammia pinnata) and Jatropha (Jatropha carcass) as metal forming lubricants. Experiments are conducted on 304L steel sheets under the raw and modified oils with suitable punch and die on a hydraulic press of 200 ton capacity. The punch load, draw-in-length and wall thickness distribution for deep dra...

The role of hot electrons in charging dust grains is investigated a two-temperature hydrogen plasma. A variety particles are introduced into the system and secondary electron emission (SEE) from each has been reported. cylindrical Langmuir probe used for determining plasma parameters Faraday cup connected to an electrometer order measure current. readings confirm SEE observed tungsten low-press...

Edge loading causes clinical problems for hard-on-hard hip replacements, and edge loading wear scars are present on the majority of retrieved components. We asked the question: are the lines of action of hip joint muscles such that edge loading can occur in a well-designed, well-positioned acetabular cup? A musculoskeletal model, based on cadaveric lower limb geometry, was used to calculate for...

In this paper a low cost knowledge base system (KBS) framework is proposed for design of deep drawing die and procedure for developing system modules. The task of building the system is structured into different modules for major activities of design of deep drawing die. A manufacturability assessment module of the proposed framework is developed to check the manufacturability of deep drawn par...

The friction coefficient in the simulation of stamping processes should be defined. Modern software allows its definition as constant or dependence on pressure temperature. It is also useful to define different values regions, it often reflects nature deformation process. This article deals with regression and analytical models commonly used determine coefficients specified areas Analytical wer...

Rapid tooling is a methodology which aims to integrate additive manufacturing into the production of tools be used in casting, forming or machining processes. In forming, rapid applied metallic plastic that guarantee good performance small- and medium-sized batch production. However, most punches tested date have dimensions measured millimeters are therefore unsuitable for typical real-world in...