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Abstract:
Ultrasonic Testing in Pipe Extrusion

Foreword from the Author

This On-Line guide book is a HTML edition of seminars and publications[References] from the author Rolf Diederichs. This hand book should give newcomers to the extrusion market help with decisions, or making for current user a further knowledge base for this technology. There are, even for Ultrasonic NDT users, some useful reading.

The state of the art revued here, relates to [References] the years 1991 -1992. Some of the guide books´ content were at that time in their early stage , or just announced. This technology gained during the last years, more and more industrial standards and it is still today very topical. Nevertheless the author will, after some other HTML publications, update this edition.

Copyright is for Internet and other electronic media always a debatable issue. It is acceptable for readers to make a personal copy . But for any further copies or commercial use, the copyright law is relevant.
I welcome your suggestions now here via mail. ©copyright Rolf Diederichs 13. Dec 1995

Contents |Go Deutsch|

• Introduction
  Basic Ultrasonic
  Ultrasonic Wall Thickness Measurement Method Impulse-Echo principles
  Ultrasonic transducer and soundfield design, properties, specification
  Ultrasonic electronic Block diagram, PC-system, IUS
  Calibration of Ultrasonic Wall Thickness Temperature relation, calibration methods
  Outer/Inner Diameter Measurement Measurement principles
• Ultrasonic mechanics
  Overview, fixed Transducers, Measurement Chamber,...Scanner....
• Measurement position in the Extrusion line
  Possibilities, advantages/disadvantages, praxis experiences. NEWwith clickmap
• Requirements for the Ultrasonic System
  Result display, Operations, Feedback, Protocol, Interfaces
• Coextrusion Layer Thickness Measurement
  Wide Range, Example Car Gasoline Pipe
• Ultrasonic Flaw Detection
  Definition, Types of Flaws, System Requirement, Evaluation , Test Mechanics
• Practical Example
  An Ultrasonic Measurement System controls precise the Inner and Outer Diameter of Plastics Pipes at a Netherlands manufacturer for Irrigation pipes
• Conclusion and Prospects

  Appendix

• References
• New advantages for quality control of Plastic Gas Pipes with an Ultrasonic Flaw Detection Rotation Machine
• Report about the K'95 Plastic fair
• FAQ-Frequent asked questions
  
  With an input form for your question - you will get answer via email.
• Echo Image Examples
  
  The Echo Image Series is a selection of Echo Signals. The series pick up common situations of Echo Signal conditions and display them with their RF Signal.
• Alphabetically Subject Index
  
  also with an Index of Figures [gifs]
• Tabulation
  
  Plastic Materials and their acoustic properties. Come back with your browser's Go-back button.