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Along with the increasingly tight competition, companies are required to always be consistent in improving quality of its products. Improvement product can achieved through minimization or even reduction defects. This study aims minimize defects by providing improvement suggestions based on critical failure modes The Six Sigma approach is adopted reduce occurrence FMEA-FSWARA-FWASPAS FMEA metho...

Studi kerusakan pada pisau (cutter) mesin milling F4.04 yang sering terjadi dalam industri manufaktur telah dilakukan menggunakan metode analisa dan perbaikan. ini bertujuan untuk menganalisis cutter melakukan perbaikan sesuai dengan standarisasi ada. Analisis penyebab tepat diharapkan dapat meningkatkan efisiensi, produktivitas, mengurangi biaya produksi di manufaktur. Analisa menggambarkan ha...

Boeing South Carolina builds the Boeing 787 Dreamliner, the world's first composite-skinned wide-body jet. This new manufacturing facility is evolving to meet the demands of building this complex aircraft. One of the challenges faced by this site is providing the manufacturing workforce with the best tools for the job in an efficient manner. Two different research streams investigate this high-...

This study introduces the fuzzy theory approach as an enhancement to traditional failure mode, effect, and criticality analysis (FMECA) method in order address its limitations, which primarily stem from subjectivity a lack of quantitative analysis. The proposed method, referred FMECA improvement based on comprehensive evaluation, aims quantify qualitative aspect provides detailed outline proced...

in this paper we study properties of symbols such that these belong to class of symbols sitting insidesm ρ,φ that we shall introduce as the following. so for because hypoelliptic pseudodifferential operatorsplays a key role in quantum mechanics we will investigate some properties of m−hypoelliptic pseudodifferential operators for which define base on this class of symbols. also we consider maxi...

At present, the replacement of disc cutters tunnel boring machine (TBM) is a very important and difficult manual operation. It meaningful to study TBM with robot. In this paper, machining assembly deviation new integrated cutter developed by our research group modeled analyzed using improved Jacobian–Torsor model, analysis results are verified experiments. On basis, aiming at possible radial an...

The movement of air around a rotating milling cutter is investigated experimentally by using the optical non-intrusive method PIV (Particle Image Velocimetry). located next to flat surface simulating processed material. Flow studied in three planes axial × radial direction with phases 90°, 180° and 270° from point closest desk. timing has been synchronized rotation. We observed plumes governed ...

Kinematics of a particular five-axis milling machine can drastically change the machining accuracy. Therefore, the reduction of the kinematics error is an important problem associated with the tool path planning. Our newoptimizationmethod employs a closed formof the kinematics error represented as a function of the positions of the cutter contact points. The closed form is derived from the inve...

In this paper, we study Projected non-stationary Simultaneous It-erative Reconstruction Techniques (P-SIRT). Based on algorithmic op-erators, convergence result are adjusted with Opial’s Theorem. The advantages of P-SIRT are demonstrated on examples taken from to-mographic imaging.