Testing CALS Standards for Engineering and Manufacturing Applications

1992 ◽  
Author(s):  
J. I. Craig ◽  
Robert E. Fulton ◽  
E. R. Stephen ◽  
A. B. Jarnagin
Keyword(s):  
Data Exchange ◽  
Academic Research ◽  
Software Systems ◽  
Aerospace Applications ◽  
Testing Strategies ◽  
Testing Facility ◽  
Design And Manufacturing ◽  
Analysis Design ◽  
Comprehensive Evaluations ◽  
Manufacturing Applications

Abstract Standards verification in a CALS environment can be a complex and demanding process requiring not only a complete understanding of the standard but also the planned application and software implementation. An area of particular concern is the adequacy of vector or geometry based standards such as IGES to represent engineering and manufacturing applications. In such cases the visual similarity of geometry can be an inadequate test of the validity of a data exchange. Analytically oriented use of the geometry representation of some design and manufacturing applications may require very precise exchange of geometric entities. This paper will focus on testing strategies to provide comprehensive evaluations of vector based geometry standards such as IGES for engineering analysis, design and manufacturing use. The tests will show effective ways to measure whether vendor translators adequately capture key behavior needed in such applications. Results will be illustrated through tests at the Georgia Tech CALS Research Center which includes several different workstations and associated CAD software systems. CALS Class II test suites taken from representative aerospace applications are used to illustrate these concepts. The results show the importance of such testing in the verification of future CALS standards built around the PDES/STEP efforts. Finally the paper will outline the role and importance of an analytic testing facility in a comprehensive academic research program on information technology for engineering and how it influences current and future engineering education.

Using VR for Design and Manufacturing Applications: A Feasibility Study

1996 ◽  
Author(s):  
S. Angster ◽  
S. Gowda ◽  
S. Jayaram
Keyword(s):  
Virtual Reality ◽  
Virtual Environment ◽  
Conceptual Design ◽  
Feasibility Study ◽  
Software Systems ◽  
Design Evaluation ◽  
Engineering Applications ◽  
Design And Manufacturing ◽  
Physical Prototype ◽  
Manufacturing Applications

Abstract Virtual Reality has been used for several years by architects to bridge the gap between their vision of the product and the finished product. Many of these applications use VR on a completed design and allow minor modifications to the design in the VR environment. This paper presents a feasibility study which was conducted to evaluate the accuracy of VR systems when used for conceptual design and in general, for engineering applications. A truck cab interior was modeled in a virtual environment and several ergonomic tests were performed in this virtual environment. The same tests were performed in a physical prototype of the truck cab and results of the two tests were compared. The virtual reality hardware and software systems used, the design evaluation scenario and the results of the tests are presented.

Semantic Interoperability of GD&T Data Through ISO 10303 Step AP242

2016 ◽  
Author(s):  
Adarsh Venkiteswaran ◽  
Sayed Mohammad Hejazi ◽  
Deepanjan Biswas ◽  
Jami J. Shah ◽  
Joseph K. Davidson
Keyword(s):  
Data Exchange ◽  
Smart Manufacturing ◽  
Context Model ◽  
Product Model ◽  
Shape Information ◽  
Computer Aided Process Planning ◽  
Model Based ◽  
Computer Aided ◽  
Iso 10303 ◽  
Manufacturing Applications

Industries are continuously trying to improve the time to market through automation and optimization of existing product development processes. Large companies vow to save significant time and resources through seamless communication of data between design, manufacturing, supply chain and quality assurance teams. In this context, Model Based Definition/Engineering (MBD) / (MBE) has gained popularity, particularly in its effort to replace traditional engineering drawings and documentations with a unified digital product model in a multi-disciplinary environment. Widely used 3D data exchange models (STEP AP 203, 214) contains mere shape information, which does not provide much value for reuse in downstream manufacturing applications. However, the latest STEP AP 242 (ISO 10303-242) “Managed model based 3D engineering” aims to support smart manufacturing by capturing semantic Product Manufacturing Information (PMI) within the 3D model and also helping with long-term archival. As a primary, for interoperability of Geometric Dimensions & Tolerances (GD&T) through AP 242, CAx Implementor Forum has published a set of recommended practices for the implementation of a translator. In line with these recommendations, this paper discusses the implementation of an AP 203 to AP 242 translator by attaching semantic GD&T available in an in-house Constraint Tolerance Graph (CTF) file. Further, semantic GD&T data can be automatically consumed by downstream applications such as Computer Aided Process Planning (CAPP), Computer Aided Inspection (CAI), Computer Aided Tolerance Systems (CATS) and Coordinate Measuring Machines (CMM). Also, this paper will briefly touch base on the important elements that will constitute a comprehensive product data model for model-based interoperability.

Virtual Assembly Design Environment

1995 ◽  
Author(s):  
Hugh I. Connacher ◽  
Sankar Jayaram ◽  
Kevin Lyons
Keyword(s):  
Virtual Reality ◽  
Research Effort ◽  
New Technology ◽  
Natural Extension ◽  
Virtual Assembly ◽  
Software Systems ◽  
Design Environment ◽  
Cad System ◽  
Assembly Design ◽  
Design And Manufacturing

Abstract Virtual reality is a technology which is often regarded as a natural extension to 3D computer graphics with advanced input and output devices. This technology has only recently matured enough to warrant serious engineering applications. The integration of this new technology with software systems for engineering, design and manufacturing will provide a new boost to the field of computer-aided engineering. One aspect of design and manufacturing which may be significantly affected by virtual reality is design for assembly. This paper presents the ideas behind a current research effort aimed at creating a virtual assembly design environment and integrating that environment with a commercial, parametric CAD system.

T-Way Testing Strategies

2017 ◽  
pp. 2011-2024
Author(s):  
Kamal Z. Zamli ◽  
AbdulRahman A. Alsewari ◽  
Mohammed I Younis
Keyword(s):  
Operating System ◽  
Software Systems ◽  
Sudden Increase ◽  
Input Output ◽  
Profound Impact ◽  
Software Applications ◽  
Testing Strategies ◽  
Current State ◽  
Actual Use ◽  
Testing Techniques

In line with the advancement of hardware technology and increasing consumer demands for new functionalities and innovations, software applications grew tremendously in term of size over the last decade. This sudden increase in size has a profound impact as far as testing is concerned. Here, more and more unwanted interactions among software systems components, hardware, and operating system are to be expected, rendering increased possibility of faults. To address this issue, many useful interaction-based testing techniques (termed t-way strategies) have been developed in the literature. As an effort to promote awareness and encourage its usage, this chapter surveys the current state-of-the-art and reviews the state-of-practices in the field. In particular, unlike earlier work, this chapter also highlights the different possible adoptions of t-way strategies including uniform interaction, variable strength interaction, and input-output-based relation, that is, to help test engineers make informed decision on the actual use of t-way strategies.

The Challenges of Implementing e-Government Interoperability in Thailand

2011 ◽  
pp. 40-61
Author(s):  
Apitep Saekow ◽  
Choompol Boonmee
Keyword(s):  
Data Exchange ◽  
Success Factors ◽  
Holistic Approach ◽  
International Standards ◽  
Software Systems ◽  
Government Agencies ◽  
Technical Standards ◽  
Policy Makers ◽  
Thai Government ◽  
Collaborative Activities

In November 2006, Thai Government announced Thailand electronic government interoperability framework (TH e-GIF) as a collection of technical standards, methodologies, guidelines and policies to enable electronic data exchange across government agencies. The first challenging project was to implement the semantic interoperability for exchanging official electronic letters across 29 government agencies using 15 heterogeneous software systems developed by different vendors. To achieve the project goal, a holistic approach was designed in which many policy-makers and practitioners had to involve in collaborative activities. This chapter explores the approach in details. It includes the process of data harmonization, modeling and standardizations using a number of UN/CEFACT specifications, UMM, CCTS and XML NDR, and other international standards. From this project the first national XML schema standard was produced. This chapter also introduces a methodology of extending the interoperability to legacy systems based on web services technology. Finally, it describes risk managements with the key success factors for the electronic interoperability development in Thailand.

Collaborative Industrial Automation

2008 ◽  
pp. 650-665
Author(s):  
Armando Walter Colombo ◽  
Ronald Schoop
Keyword(s):  
21St Century ◽  
Industrial Application ◽  
Fault Tolerant ◽  
Academic Research ◽  
Shop Floor ◽  
Software Systems ◽  
Industrial Automation ◽  
Virtual Factory ◽  
New Vision ◽  
Automation Technology

This chapter summarizes our latest results concerning the development and the industrial application of the emerging “collaborative industrial automation” technology and its powerful meaning for facilitating the integration of a dynamic reconfigurable shop floor into a virtual factory. It argues, in this respect, that having a conglomerate of distributed, autonomous, intelligent, fault-tolerant, and reconfigurable production units, which operate as a set of cooperating entities, is one promising platform to achieve both local and global manufacturing objectives. Furthermore, the authors hope that understanding the underlying scientific and technological background through the development and industrial application of the collaborative automation paradigm will not only inform the academic, research, and industrial world of an emerging control and automation paradigm, but also assist in the understanding of a new vision of the manufacturing system of the 21st century [a mix of collaborative units, i.e., people, software systems, processes, and equipment (hardware), integrated into a virtual factory].

Collaborative Decision Making Across Digital Interfaces

2002 ◽  
Author(s):  
Angran Xiao ◽  
Hae-Jin Choi ◽  
Janet K. Allen ◽  
David W. Rosen ◽  
Farrokh Mistree
Keyword(s):  
Decision Making ◽  
Collaborative Work ◽  
Payoff Function ◽  
Software Systems ◽  
Collaborative Decision Making ◽  
Realization Problem ◽  
Engineering Teams ◽  
Design And Manufacturing ◽  
Product Realization ◽  
Collaborative Decision

In distributed product realization problems, new paradigms and accompanying software systems are necessary to support the collaborative work of geographically dispersed engineering teams from different disciplines who have different knowledge, experience, tools and resources. In the context of prototyping product using SFF technologies, digital interfaces are constructed between engineering teams, especially between design and manufacturing teams, to separate their product realization activities. Across digital interfaces, each engineering team holds its own perspective towards the product realization problem, and each controls a subset of design variables and seeks to maximize its own payoff function subject to individual constraints. That is, engineering teams act like players in a team sport (i.e., a game) cooperating to achieve a set of overall goals. Hence, we postulate the use of principles from game theory to model the relationships between engineering teams. In this paper, a decision template is used as a digital interface enabling information about product realization activities to be transferred between engineering teams. Three game protocols are used to facilitate collaborative decision making without iteration across digital interfaces. A simple product realization scenario is introduced to demonstrate the efficacy of inserting digital interfaces between design and manufacturing teams.

Domain Independent Characterization of Parametric and Geometric Problems in Embodiment Design

2000 ◽  
Author(s):  
Bernie Bettig ◽  
Jami J. Shah ◽  
Joshua D. Summers
Keyword(s):  
Data Exchange ◽  
Parametric Design ◽  
Canonical Representation ◽  
Domain Specific ◽  
Geometric Problems ◽  
Embodiment Design ◽  
Small Set ◽  
Constraint Problem ◽  
Manufacturing Applications ◽  
Domain Independent

Abstract In embodiment and detailed design one is often concerned with sizing and geometric arrangement. Constraint problems of satisfying certain relationships in feasible designs are often solved by domain specific procedures in design and manufacturing applications. This paper shows that a variety of such problems are reducible to a small set of generic problems solvable by domain-independent procedures. A taxonomy of constraint problem types is developed. The taxonomy is based on the types of entities, constraints, and tasks (reasoning or inquiry) that are to be performed. The “exemplar” is introduced as a new concept for describing complex situational patterns and extracting information of interest. Such a canonical representation of parametric problems is needed for designing cleaner interfaces between applications and generic solvers, as a basis for standardized data exchange between future CAD systems, and for providing the foundations for domain independent shells for parametric design.

Review of augmented reality in aerospace industry

2019 ◽  
Vol 91 (9) ◽  
pp. 1187-1194 ◽  
Author(s):  
Maryam Safi ◽  
Joon Chung ◽  
Pratik Pradhan
Keyword(s):  
Augmented Reality ◽  
Review Process ◽  
Aerospace Industry ◽  
Academic Research ◽  
Industrial Training ◽  
Content Type ◽  
Aerospace Applications ◽  
Aerospace Sector ◽  
Comprehensive Reference

Purpose The purpose of this paper is to assess and determine the potential of augmented reality (AR) in aerospace applications through a survey of published sources. Design/methodology/approach This paper reviews a database of AR applications developed for the aerospace sector in academic research or industrial training and operations. The review process begins with the classification of these applications, followed by a brief discussion on the implications of AR technology in each category. Findings AR is abundantly applied in engineering, navigation, training and simulation. There is potential for application in in-flight entertainment and communication, crew support and airport operations monitoring. Originality/value This paper is a general review introducing existing and potential AR applications in various fields of the aerospace industry. Unlike previous publications, this article summarizes existing and emerging applications to familiarize readers with AR use in all of aerospace. The paper outlines example projects and creates a single comprehensive reference of AR advancements and its use in the aerospace industry. The paper provides individuals with a quick guide to available and emerging technology.

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