scholarly journals Development of Probabilistic Structural Analysis Integrated With Manufacturing Processes

2007 ◽  
Author(s):  
Shantaram S. Pai ◽  
Vinod K. Nagpal
Keyword(s):  
Structural Analysis ◽  
Probabilistic Analysis ◽  
Manufacturing Process ◽  
Deformation Resistance ◽  
Process Models ◽  
The Other ◽  
Manufacturing Processes ◽  
Powdered Metal ◽  
Software Interface ◽  
Process Simulations

An effort has been initiated to integrate manufacturing process simulations with probabilistic structural analyses in order to capture the important impacts of manufacturing uncertainties on component stress levels and life. Two physics-based manufacturing process models (one for powdered metal forging and the other for annular deformation resistance welding) have been linked to the NESSUS structural analysis code. This paper describes the methodology developed to perform this integration including several examples. Although this effort is still underway, particularly for full integration of a probabilistic analysis, the progress to date has been encouraging and a software interface that implements the methodology has been developed. The purpose of this paper is to report this preliminary development.

Probabilistic Structural Analysis of Annular Deformation Resistance Welding Process

2010 ◽  
Author(s):  
Shantaram S. Pai ◽  
N. Bhattacharya ◽  
Vinod K. Nagpal
Keyword(s):  
Structural Analysis ◽  
Probabilistic Analysis ◽  
Process Simulation ◽  
Manufacturing Process ◽  
Welding Process ◽  
Deformation Resistance ◽  
Resistance Welding ◽  
Simulation Code ◽  
Software Interface ◽  
Process Simulations

An effort has been ongoing to integrate manufacturing process simulations with probabilistic structural analyses in order to capture the important impacts of manufacturing uncertainties on component stress levels and life. A physics-based manufacturing process simulation code has been linked to the NESSUS structural analysis code to analyze annular deformation resistance welding manufacturing process. This paper describes the methodology developed to perform this integration, including an example. Although this effort is underway, particularly for fuller integration of a probabilistic analysis, the progress to date has been encouraging and a software interface that implements the methodology has been developed. The purpose of this paper is to report this development.

scholarly journals Dealing with Uncertainties in Manufacturing Process Simulations

2017 ◽  
Vol 869 ◽  
pp. 226-233
Author(s):  
Patrick Ruediger ◽  
Hans Hagen
Keyword(s):  
Manufacturing Process ◽  
Working Environment ◽  
The Other ◽  
Manufacturing Processes ◽  
Simulation Validation ◽  
Other Hand ◽  
Process Simulations ◽  
Simulation Results

Uncertainty in manufacturing processes is as old as the manufacturing process itself. Simulationson the other hand are always certain in their outcome based on the chosen parameters. Nonethelessit makes sense to incorporate uncertainties in the simulation for validation and analysis of the realand simulated processes. This paper aims on highlighting the importance of an accurate understandingand measurement of uncertainty for simulation validation and thus to increase the significance andacceptance of simulation results in the working environment.

scholarly journals A Similarity-Based Hierarchical Clustering Method for Manufacturing Process Models

2019 ◽  
Vol 11 (9) ◽  
pp. 2560
Author(s):  
Hyun Ahn ◽  
Tai-Woo Chang
Keyword(s):  
Hierarchical Clustering ◽  
Operations Management ◽  
Manufacturing Process ◽  
Manufacturing Industry ◽  
Clustering Algorithm ◽  
Process Models ◽  
Manufacturing Processes ◽  
Manufacturing Companies ◽  
Agglomerative Clustering ◽  
Clustering Method

As the adoption of information technologies increases in the manufacturing industry, manufacturing companies should efficiently manage their data and manufacturing processes in order to enhance their manufacturing competency. Because smart factories acquire processing data from connected machines, the business process management (BPM) approach can enrich the capability of manufacturing operations management. Manufacturing companies could benefit from the well-defined methodologies and process-centric engineering practices of this BPM approach for optimizing their manufacturing processes. Based on the approach, this paper proposes a similarity-based hierarchical clustering method for manufacturing processes. To this end, first we describe process modeling based on the BPM-compliant standard so that the manufacturing processes can be controlled by BPM systems. Second, we present similarity measures for manufacturing process models that serve as a criterion for the hierarchical clustering. Then, we formulate the hierarchical clustering problem and describe an agglomerative clustering algorithm using the measured similarities. Our contribution is considered on the assumption that a manufacturing company adopts the BPM approach and it operates various manufacturing processes. We expect that our method enables manufacturing companies to design and manage a vast amount of manufacturing processes at a coarser level, and it also can be applied to various process (re)engineering problems.

A Desktop Application for Sustainability Performance Assessment of Composed Unit-Based Manufacturing Systems

2017 ◽  
Author(s):  
Matteo M. Smullin ◽  
Zahra Iman ◽  
Karl R. Haapala
Keyword(s):  
Manufacturing Process ◽  
Manufacturing Systems ◽  
Sustainability Assessment ◽  
Information Modeling ◽  
Process Models ◽  
System Level ◽  
Manufacturing Processes ◽  
Modeling Framework ◽  
Process Flow ◽  
Desktop Application

Life cycle assessment software packages such as SimaPro, GaBi, and Umberto have become well-established tools for conducting environmental impact analysis. However, applications for broader sustainability assessment are limited. Recent research has developed an information modeling framework to compose models of unit manufacturing processes for sustainability assessment and has led to the definition of unit manufacturing process information modeling concepts. An engineer can use the framework to conduct manufacturing system-level sustainability assessments by composing models of unit manufacturing processes. Assessment results can aid engineers in selecting the superior manufacturing process flow for a given product. To demonstrate usefulness of the information framework, a prototype desktop application has been developed. The application was implemented in Windows Project Foundation (WPF) using C# as the coding language to create a graphical user interface. Mathworks MATLAB serves as the calculation engine. Unit manufacturing process models follow the framework and are read by the application, which produces a sustainability assessment for the manufacturing process flow. A manufacturing process flow for an automobile-like metal product acts is used to demonstrate the software application.

Developing a Capability-Based Similarity Metric for Manufacturing Processes

2017 ◽  
Author(s):  
Kevin Li ◽  
William Z. Bernstein
Keyword(s):  
Decision Making ◽  
Manufacturing Process ◽  
Product Life Cycle ◽  
Process Model ◽  
Die Casting ◽  
Process Models ◽  
Manufacturing Processes ◽  
Design Phase ◽  
Similarity Metric ◽  
On Line

Manufacturing taxonomies and accompanying metadata of manufacturing processes have been catalogued in both reference books and databases on-line. However, such information remains in a form that is uninformative to the various stages of the product life cycle, including the design phase and manufacturing-related activities. This challenge lies in the varying nature in how the data is captured and represented. In this paper, we explore measures for comparing manufacturing data with the goal of developing a capability-based similarity metric for manufacturing processes. To judge the effectiveness of these metrics, we apply permutations of them to 26 manufacturing process models, such as blow molding, die casting, and milling, that were created based on the ASTM E3012-16 standard. Furthermore, we provide directions towards the development of an aggregate similarity metric considering multiple capability features. In the future, this work will contribute to a broad vision of a manufacturing process model repository by helping ease decision-making for engineering design and planning.

Unit Manufacturing Process Models for Ferromagnetic and Non-Ferromagnetic Alloy Surface Inspection Methods

2015 ◽  
Author(s):  
Ian C. Garretson ◽  
Kevin W. Lyons ◽  
Mahesh Mani ◽  
Swee Leong ◽  
Matthew D. Carter ◽  
...  
Keyword(s):  
Continuous Improvement ◽  
Manufacturing Process ◽  
Performance Metrics ◽  
Process Models ◽  
Manufacturing Processes ◽  
Mathematical Basis ◽  
Sustainability Performance ◽  
Ferromagnetic Alloys ◽  
Individual Unit ◽  
Aircraft Component

Industrial use of natural resources are increasing at an alarming rate. Engineering and decision support tools are needed for analyzing and curbing industrial consumption of resources. Further, assessment methods to measure and indicate continuous improvement are also needed. Modeling individual manufacturing processes facilitates the generation of quantifiable evidence that improvements are being made. Such a modeling approach is developed and demonstrated in this paper to characterize sustainability performance of two metals inspection processes: magnetic particle inspection for ferromagnetic alloys and penetrant inspection for non-ferromagnetic alloys. Individual unit manufacturing process (UMP) models were developed by observing the inspection practices at an aircraft component manufacturer, and a mathematical basis for comparison with other inspection processes was identified. The paper further demonstrates the aggregation of performance metrics from all UMPs across a manufacturing process flow thus providing a basis for generating detailed sustainability performance assessments of manufactured products. By developing and documenting a comprehensive set of UMP models, more complete knowledge of manufacturing processes can be gained by industry practitioners, leading to continuous improvement of sustainability performance.

UMP Builder: Capturing and Exchanging Manufacturing Models for Sustainability

2018 ◽  
Author(s):  
William Z. Bernstein ◽  
David Lechevalier ◽  
Don Libes
Keyword(s):  
Environmental Analysis ◽  
Environmental Sustainability ◽  
Manufacturing Process ◽  
Manufacturing Systems ◽  
Information Model ◽  
Process Models ◽  
Data Driven ◽  
Manufacturing Processes ◽  
Initial Layer ◽  
Early Use

Targeting the improvement of environmental analysis of manufacturing systems, ASTM 3012-16 provides guidelines for formally characterizing manufacturing processes. However, the difficulty that has arisen in the early use of the standard illustrates the need for intuitive tools for helping modeling experts to conform to the specified information model. In response, we present the Unit Manufacturing Process (UMP) Builder, a browser-based tool integrating symbolic mathematical and guided textual inputs, helping to consistently record and exchange manufacturing process models for environmental sustainability. The tool provides an initial layer of governance and verification with respect to the conformance to ASTM 3012-16. In this paper, we (1) detail the requirements with developing such a tool, (2) propose an improved schema to represent UMP models accommodating data-driven techniques, and (3) demonstrate the tool using a contributed model from an open challenge for modeling manufacturing processes.

An Open Architecture for the Sustainable Lifecycle of Products and Manufacturing Processes from the Holonic Paradigm

2016 ◽  
Vol 853 ◽  
pp. 7-12
Author(s):  
María Jesús Ávila Gutiérrez ◽  
F. Aguayo González ◽  
J.R. Lama Ruiz ◽  
A.M. Martín Gómez
Keyword(s):  
Manufacturing Process ◽  
Social Economic ◽  
The Other ◽  
Open Architecture ◽  
Manufacturing Processes ◽  
Concurrent Design ◽  
Environmental Load ◽  
Economic Aspects ◽  
Environmental Aspects ◽  
Sustainable Products

The concept of integration of products and manufacturing processes in ecosystems is evolving from the consideration of environmental aspects to the integration of socio-economic aspects. On the other hand, the lifecycle of product and manufacturing process is the central point for organizing the activity that determines and materializes the environmental load of the product from cradle to grave. So far, there isn ́t an integrated model from the perspective of assessing the sustainability of products and processes with a focus on concurrent design. This paper develops a Holonic protomodel that constitutes an open architecture for lifecycle of sustainable products and processes that integrate the assess of products from social, economic and environmental perspective.

Structuralism as a Pamphlet (On the Book by E. Reinert “How Rich CountriesGot Rich... And Why Poor Countries Stay Poor”. 2nd ed.)

2014 ◽  
pp. 147-153
Author(s):  
P. Orekhovsky
Keyword(s):  
Economic Theory ◽  
Economic Development ◽  
Structural Analysis ◽  
Increasing Returns ◽  
The Other ◽  
Static Theory ◽  
Poor Countries ◽  
Historical School ◽  
Socio Economic Development ◽  
The Relationship

The review outlines the connection between E. Reinert’s book and the tradition of structural analysis. The latter allows for the heterogeneity of industries and sectors of the economy, as well as for the effects of increasing and decreasing returns. Unlike the static theory of international trade inherited from the Ricardian analysis of comparative advantage, this approach helps identify the relationship between trade, production, income and population growth. Reinert rehabilitates the “other canon” of economic theory associated with the mercantilist tradition, F. Liszt and the German historical school, as well as a reconside ration of A. Marshall’s analysis of increasing returns. Empirical illustrations given in the book reveal clear parallels with the path of Russian socio-economic development in the last twenty years.

scholarly journals Metal Machining—Recent Advances, Applications, and Challenges

Metals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 580
Author(s):  
Francisco J. G. Silva
Keyword(s):  
Surface Finish ◽  
Manufacturing Process ◽  
Dimensional Accuracy ◽  
Machining Process ◽  
High Dimensional ◽  
Manufacturing Processes ◽  
Recent Advances ◽  
Metal Machining ◽  
Rapid Manufacture

Though new manufacturing processes that revolutionize the landscape regarding the rapid manufacture of parts have recently emerged, the machining process remains alive and up-to-date in this context, always presenting itself as a manufacturing process with several variants and allowing for high dimensional accuracy and high levels of surface finish [...]

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