An air-guided and fly-cutting system for biconic-Zernike surfaces

2016 ◽  
Author(s):  
HyungTae Kim ◽  
KiHyeong Song ◽  
YoungJae Choi ◽  
SungChul Kim
Keyword(s):  
Fly Cutting ◽  
Cutting System

Risk analysis of cutting system under intuitionistic fuzzy environment

2020 ◽  
Vol 1 (1) ◽  
pp. 162-173
Author(s):  
Dinesh Kumar Kushwaha ◽  
◽  
Dilbagh Panchal ◽  
Anish Sachdeva ◽  
◽  
...  
Keyword(s):  
Risk Assessment ◽  
Failure Mode ◽  
Thermal Power ◽  
Failure Detection ◽  
Engineering System ◽  
Effect Analysis ◽  
Intuitionistic Fuzzy ◽  
Mode Effect ◽  
Cutting System ◽  
Failure Mode Effect Analysis

Failure Mode Effect Analysis (FMEA) is popular and versatile approach applicable to risk assessment and safety improvement of a repairable engineering system. This method encompasses various fields such as manufacturing, healthcare, paper mill, thermal power industry, software industry, services, security etc. in terms of its application. In general, FMEA is based on Risk Priority Number (RPN) score which is found by product of probability of Occurrence (O), Severity of failure (S) and Failure Detection (D). As human judgement is approximate in nature, the accuracy of data obtained from FMEA members depend on degree of subjectivity. The subjective knowledge of members not only contains uncertainty but hesitation too which in turn, affect the results. Fuzzy FMEA considers uncertainty and vagueness of the data/ information obtained from experts. In order to take into account, the hesitation of experts and vague concept, in the present work we propose integrated framework based on Intuitionistic Fuzzy- Failure Mode Effect Analysis (IF-FMEA) and IF-Technique for Order Preference by Similarity to Ideal Solution (IF-TOPSIS) techniques to rank the listed failure causes. Failure cause Fibrizer (FR) was found to be the most critical failure cause with RPN score 0.500. IF-TOPSIS has been implemented within IF-FMEA to compare and verify ranking results obtained by both the IF based approaches. The proposed method was presented with its application for examining the risk assessment of cutting system in sugar mill industry situated in western Uttar Pradesh province of India. The result would be useful for the plant maintenance manager to fix the best maintenance schedule for improving availability of cutting system.

A New Deprocess Flow of Failure Analysis for MEMS Motion Sensor

2013 ◽  
Author(s):  
Chun-An Huang ◽  
Han-Yun Long ◽  
King-Ting Chiang ◽  
Li Chuang ◽  
Kevin Tsui
Keyword(s):  
Failure Analysis ◽  
Optical Microscopy ◽  
Motion Sensor ◽  
Thermal System ◽  
Layer By Layer ◽  
Sensor Failure ◽  
Process Flow ◽  
New Process ◽  
Cutting System ◽  
Successful Observation

Abstract This paper demonstrates a new de-process flow for MEMS motion sensor failure analysis, using layer by layer deprocessing to locate defect points. Analysis tools used in this new process flow include IR optical microscopy, thermal system, SEM and a cutting system to de-process of MEMS motion sensor and successful observation defect points.

Novel tool offset fly cutting straight-groove-type micro structure arrays

2021 ◽  
Vol 288 ◽  
pp. 116900
Author(s):  
Jiankai Jiang ◽  
Tong Luo ◽  
Guoqing Zhang ◽  
Yuqi Dai
Keyword(s):  
Micro Structure ◽  
Tool Offset ◽  
Fly Cutting

scholarly journals Compact-sized Cutting System for a Serial-block-face Scanning Electron Microscopy

2021 ◽  
Vol 27 (S1) ◽  
pp. 3176-3177
Author(s):  
Nanami Takagi ◽  
Norio Yamashita ◽  
Yuki Tsujimura ◽  
Hiroshi Takemura ◽  
Sze Keat Chee ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Face Scanning ◽  
Block Face ◽  
Cutting System ◽  
Scanning Electron

Material Selection and Application of Abrasive-Liquid Device Sealing Bush

2011 ◽  
Vol 127 ◽  
pp. 110-114
Author(s):  
Rui Zeng ◽  
Chang Long Du ◽  
Jing Zhao ◽  
Rui Xu
Keyword(s):  
Glass Fiber ◽  
Abrasive Water Jet ◽  
Fiber Reinforced ◽  
Short Glass Fiber ◽  
Glass Fiber Reinforced ◽  
Water Jet Cutting ◽  
Weight Content ◽  
Abrasive Water Jet Cutting ◽  
Cutting System ◽  
Short Glass

In order to make the switch valve in abrasive-liquid device of premixed abrasive water jet cutting system work normally, the sealing bush which ensures the pressure constant and the switch smooth is needed. The structure, material and craft of the switch valve sealing bush are studied in this paper. The different weight content of short glass fiber reinforced nylon is tested in the environment of no lubricant, water lubricant and oil lubricant. The result shows that in oil lubricant environment, the 33% weight content of short glass fiber reinforced nylon composites have the best capabilities and the least resistance of friction. The experimental result proves that the sealing bush made by the prepared short glass fiber reinforced nylon composites can meet the require of the premixed abrasive water jet cutting system, according to which the sealing bush is producted and assembled to the abrasive-liquid device.

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