Application of FOM Methodology for 4M Optimization Based on the Data of Manufacturing Process of Mechanical Parts

2021 ◽  
Vol 30 (6) ◽  
pp. 456-464
Author(s):  
Sang Suk Oh ◽  
Hae Sung Yang ◽  
Byung Seong Bae ◽  
Su Young Kim
Keyword(s):  
Manufacturing Process ◽  
Mechanical Parts

Influence of Manufacturing Process on Stress Distributions in Mechanical Parts

2013 ◽  
Vol 465-466 ◽  
pp. 631-636 ◽  
Author(s):  
Zdenek Poruba ◽  
Jan Szweda
Keyword(s):  
Stress State ◽  
Stress Level ◽  
Manufacturing Process ◽  
Stress Distributions ◽  
Mechanical Parts ◽  
Assembly Method ◽  
Factors Influencing ◽  
Welding Technology ◽  
Press Fitting ◽  
Weld Structure

The presented paper deals with the influence of manufacturing process on the stress state of mechanical parts. The problem is presented in the assembly of the belt drum. The connections of individual parts are realized by press fitting and welding technology. The practical use of the belt drum shows the initiation of cracks in the weld body. The presence of press fitting connection in the structure is marked as the origin of high stresses in the weld body. The paper proposes the new assembly method in order to reduce the stress level in the weld structure and points the assembly method as one of important factors influencing the stress state of mechanical parts.

An Inspection Approach for Nonrigid Mechanical Parts

2013 ◽  
Vol 816-817 ◽  
pp. 806-811 ◽  
Author(s):  
Ali Aidibe ◽  
Souheil Antoine Tahan
Keyword(s):  
Residual Stress ◽  
Sheet Metal ◽  
Manufacturing Process ◽  
Statistical Test ◽  
Intrinsic Properties ◽  
Mechanical Parts ◽  
Nominal Model ◽  
Profile Deviation ◽  
Flexible Part ◽  
Curvature Estimation

Nowadays, a complicated and expensive conformation jig is needed to inspect the nonrigid parts. In a free-state condition, these parts may have a significant different shape than their nominal model (CAD) due to gravity loads and residual stress. In this paper, we present a new method for automatic fixtureless inspection of nonrigid parts. The inspection in our case is limited to the profile deviation as required by ASME Y14.5 standard and the defects are dent shapes. Our method combines the curvature estimation, one of the intrinsic properties of the geometry, with the Thomson statistical test in order to identify the defects due to the inherent variations of the manufacturing process from the deformations due to the flexibility of the part. The method is tested and validated on a simulated flexible part representing a typical sheet metal from the transport industry.

Virtual Technology Based Associative Integration of Modeling of Mechanical Parts

2001 ◽  
Vol 5 (5) ◽  
pp. 269-278 ◽  
Author(s):  
László Horváth ◽  
◽  
Imre J. Rudas ◽  
Keyword(s):  
Product Design ◽  
Engineering Design ◽  
Manufacturing Process ◽  
Process Model ◽  
Computer Systems ◽  
Product Model ◽  
Modeling Tools ◽  
Virtual Technology ◽  
Mechanical Parts ◽  
Prototype Development

Advanced application of powerful computer tools at engineering design of advanced products related activities means creating integrated product models in advanced computer systems. Leading application oriented master model concepts and standards as STEP serve this purpose. Engineers are working simultaneously on product design. Results of engineering decisions are analyzed for loads, aesthetics and manufacturability. Product design, results of analyses, processes of manufacturing of parts and much more are described in integrated product model. This model is accessed by several engineers simultaneously and is communicated with other engineering design environments. Because most of prototype development activities are being moved into computer systems, advanced modeling is often cited as virtual pro-, totyping. This paper summarizes and relates some advanced modeling approaches and methods to emphasize main trends in fulfilling demands for modeling tools in the early 21th century. As one of the key issues a manufacturing process model associative with form feature based part model is introduced. This model was proposed by the authors. The motivation is that low level integration of design and manufacturing of mechanical parts is still a main drawback of efficient application of expensive modeling systems. The proposed method ’allows for creating part models simultaneously with their analysis of machineability. In this paper chapter 2 outlines the scene of modeling based decision making of engineers as well as levels of product model creation. Chapter 3 explains the prevailing modeling principles, while chapter 4 emphasizes structure descriptions. In chapter 5 the proposed associative, Petri net model representation based manufacturing process modeling and its potential applications are explained are detailed. Two additional key subject areas are discussed in chapter 6 and chapter 7, namely effects of globalization on modeling and product data management. The main aspect of discussion is model and communication based group work of engineers.

Identifying groups of airborne particles by ordination

1994 ◽  
Vol 52 ◽  
pp. 856-857
Author(s):  
M. Shlepr ◽  
C. M. Vicroy
Keyword(s):  
Elemental Analysis ◽  
Energy Dispersive Spectroscopy ◽  
Manufacturing Process ◽  
Spatial Representation ◽  
Airborne Particles ◽  
Common Source ◽  
Data Set ◽  
Microelectronics Industry ◽  
Induced Changes ◽  
Source Materials

The microelectronics industry is heavily tasked with minimizing contaminates at all steps of the manufacturing process. Particles are generated by physical and/or chemical fragmentation from a mothersource. The tools and macrovolumes of chemicals used for processing, the environment surrounding the process, and the circuits themselves are all potential particle sources. A first step in eliminating these contaminants is to identify their source. Elemental analysis of the particles often proves useful toward this goal, and energy dispersive spectroscopy (EDS) is a commonly used technique. However, the large variety of source materials and process induced changes in the particles often make it difficult to discern if the particles are from a common source.Ordination is commonly used in ecology to understand community relationships. This technique usespair-wise measures of similarity. Separation of the data set is based on discrimination functions. Theend product is a spatial representation of the data with the distance between points equaling the degree of dissimilarity.

Water in the Vinegar Manufacturing Process

1952 ◽  
Vol 44 (3) ◽  
pp. 449-449
Author(s):  
Rudolph Allgeier ◽  
Reuben Wisthoff ◽  
Frank Hildebrandt
Keyword(s):  
Manufacturing Process

A Perspective on Low Molecular Weight Heparins in the Management of Thrombosis

1993 ◽  
Vol 13 (S 01) ◽  
pp. S5-S11 ◽  
Author(s):  
Debra Hoppensteadt ◽  
Jeanine Walenga ◽  
A Ahsan ◽  
O Iqbal ◽  
W Jeske ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Mechanism Of Action ◽  
Manufacturing Process ◽  
Laboratory Tests ◽  
Low Molecular Weight ◽  
Low Molecular Weight Heparins ◽  
Pharmacological Management

SummaryThe introduction of low molecular weight heparins has added a new dimension to the pharmacological management of thrombotic disorders. Because of different chemical and pharmacological characteristics, due to the manufacturing process, each LMWH should be considered as a distinct entitity and only be used for its given indication. A list of commercially available LMWHs is included. The mechanism of action of the LMWHs and their use in various disorders are discussed. Available laboratory tests for monitoring LMWHs are presented and their limitations pointed out.

Monitoring yeast species in quarg, quarg products and their production environment during the manufacturing process

2003 ◽  
Vol 32 (3) ◽  
pp. 317-322
Author(s):  
J. Šalomskiené ◽  
A. Paškevičius ◽  
I. Mačioniené
Keyword(s):  
Manufacturing Process ◽  
Yeast Species ◽  
Production Environment
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