Masters Theses

Abstract

"When complex manufacturing systems are considered, post process inspection can be a very time consuming and costly. In addition, no inspection data is typically collected unless a major problem is encountered. Real-time monitoring of the manufacturing processes and verification of its product quality are two important factors to reduce the manufacturing lead time and to ensure safety and quality.

In this thesis, a diagnostics and root-cause analysis scheme with a single channel wireless routing protocol for real-time monitoring of process quality of pull-type fastening operations is first presented. The overall architecture has been implemented on a Huck45 pull-type tool, which is a hand-held pneumatic fastening tool used extensively in the aerospace industry, with lock-bolt fasteners. The proposed architecture (I) detects quality problems in real-time during the fastening process and (2) reduces post-process inspection. Extensive hardware results by using the hand-held tool are included.

On the other hand, due to tool mobility, ad-hoc wireless networking routing protocol is necessary to enable real-time monitoring and increase the process visibility. Thus, in the second chapter of this thesis, a novel multi-channel energy efficient routing protocol for ad hoc wireless networks that ensures network quality of service (QoS) in terms of throughput and end-to-end delay is introduced for such hand-held tools. The network QoS effects the overall monitoring when multiple tools are utilized. The performance of the multi-channel multi-interface routing protocol for network-enabled manufacturing environments was successfully verified using Ns2 simulations and contrasted with a single channel routing protocol implemented in Chapter I of the thesis"--Abstract, page iv.

Advisor(s)

Sarangapani, Jagannathan, 1965-
Saygin, Can

Committee Member(s)

Dagli, Cihan H., 1949-

Department(s)

Engineering Management and Systems Engineering

Degree Name

M.S. in Systems Engineering

Sponsor(s)

Air Force Research Laboratory (Wright-Patterson Air Force Base, Ohio)

Comments

This study was funded by the AFRL under the contract F A8650-04-C-704 through the Center for Aerospace Manufacturing Technologies (CAMT) at the University of Missouri-Rolla (UMR) and NSF VUCRC Center for Intelligent Maintenance Systems (IMS).

Publisher

Missouri University of Science and Technology

Publication Date

2008

Journal article titles appearing in thesis/dissertation

  • In process detection of fastener grip length using embedded mobile wireless sensor network-based pull type tools.
  • Multi-interface multi-channel routing (MMCR) protocol for ad hoc wireless networks

Pagination

ix, 79 pages

Note about bibliography

Includes bibliographical references.

Rights

© 2008 Reghu Anguswamy, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Subject Headings

Manufacturing processes -- Quality controlAd hoc networks (Computer networks)Process control -- Computer programsQuality control

Thesis Number

T 10185

Print OCLC #

861703926

Electronic OCLC #

905545341

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