Hydrophylic fumed silica AR974 was tested as a potential nanofiller for the production of composite isotactic polypropylene filaments/fibers (containing 0.25–2 vol % of nanoparticles) via melt compounding and subsequent hot drawing. The objectives of this study were as follows: (i) to investigate the effects of the composition and the processing conditions on the microstructure and the thermal ...

Anisotropic behavior is a key characteristic for understanding eccentricity in tubes. In this paper, the effect of using tilted die during tube drawing on eccentricity, texture, dislocation density, and mechanical properties shown. Copper tubes were drawn with ±5° two passes. The increase or decrease can be controlled by controlling angle die. Two types textures have been developed drawing, nam...

Penelitian ini dilatarbelakangi oleh belum diterapkanya program pengajaran bahasa Inggris secara khusus yang menyesuaikan dengan kebutuhan diperlukan siswa. Tujuan dari penelitian adalah untuk mengetahui apa sajakah kebutuhkan siswa jurusan Teknik Gambar Mesin pada bahan ajar Bahasa Inggris. dilakukan menggunakan kualitatif di SMK N 1 Padang Total sampling, yakni pengambilan sample berdasarkan ...

The Problem: Interfaces to mechanical design systems seriously limit the user’s creativity, while drawing on paper does not allow the user to interact with her sketch as a mechanical system. We would like to provide a natural environment for sketching and developing mechanical systems directly on the computer. We are doing this by building an environment that combines the creative freedom of fr...

At present, multi-bar linkage mechanism is one of the most important directions of mechanical presses’ development. Utilizing the typical multi-linkage drawing mechanism of the plunger slide and compounding its parameters scientifically are a fairly effective way to realize the drawing technology demand. This paper established kinematics mode of the six-bar drawing mechanism by bar-group method...

Mechanical properties and microstructures of commercially pure titanium (CP-Ti) developed by a newly designed multi-pass equal channel angular pressing (ECAP) process and cold drawing were investigated. The ECAP apparatus was developed in order to improve the efficiency of common ECAP and the performance of finished products. A much stronger CP-Ti billet was produced by using the proposed proce...

this work is an attempt towards employing ductile damage criterion and finite elementsimulations for prediction of fracture initiation and evolution in deep drawing of copper/stainlesssteel clad sheets. the material mechanical properties and ductile damage parameters weredetermined through standard and notched tensile tests. the effect of some important processparameters on damage evolution wer...