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NDTech Newsletter #18

1. News From NTIAC

2. Publications
3. Price List of NTIAC Publications
4. New Weld Inspection Publication
5. Offshore NDT Information Web Locations
6. Penetrant Inspection, Hot or Cold How, When, and Why?
7. NDE Industry News
8. Meetings and Symposia Calendar
The NDTech Newsletter is published periodically by NDTech, a consulting
firm offering nondestructive testing, services, and instruments. This
newsletter is distributed by email and covers brief descriptions of some
useful but less publicized radiographic, ultrasonic, penetrant, magnetic
particle, and other NDT methods. You will automatically receive the
newsletter, at no cost. If you wish to be removed from the NDTech
Newsletter, simply reply remove with "Remove" as the subject.

To find out more about NDTech and its nondestructive testing consulting
services and instrumentation, visit the NDTech website at

1.News From NTIAC

NTIAC continues to respond to both technical and bibliographic inquiries
from the technical community. Simple literature searches of the NTIAC
Bibliographic Database are conducted for no charge; however, more
reviews and analyses, technology assessments, or technical assistance
be provided for a nominal negotiated fee. Topics include the following:

* Neural network analysis of electromagnetic NDE data

* Ultrasonic pattern recognition

* NDE of ceramics

* Weld inspection

* Probability of detection of geometric unsharpness

* Stress and fatigue in the automotive industry

For additional information contact: ntiac@access.texas.gov


Electromagnetic Nondestructive Evaluation- T. Takagi, J.R. Bowler, and
Eddy current testing is a key technology among electromagnetic
nondestructive testing at present and this situation was motivated by a
stringent need to detect small cracks in tubing of a steam generator of
nuclear power plants. In these five years the ECT technology has been
enhanced very much, demonstrating that high performance sensors for ECT
now ready to be applied to the annual inspection of steam generator
with use of arrayed micro sensors for ECT. In addition to the innovative
technology, an inversion technique is being theoretically developed to
reconstruction of defects possible with use of data from the arrayed
sensors. Rapid growth of interest in electromagnetic nondestructive
evaluation has brought together experts from different parts of the
as reflected in this work.

The book is intended for engineers, researchers and practitioners
working in the area of electromagnetism.

This summary as well as the book can be found at
http://www.fatbrain.com. The book is listed at $104.00 and has 328
It was published in May 1999.

Electromagnetic Non-Destructive Evaluation (II)- R. Albanese
The book is a collection of papers on electromagnetic
nondestructive evaluation. The book discusses recent developments and
exchange up-to-date information in the field of the electromagnetic
nondestructive evaluation (E'NDE)

Topics covered are:
- New methods of electromagnetic nondestructive testing
- Advanced sensing technology
- Solution to forward and inverse problems
- Proposal and results of benchmark problems
- Applications (nuclear and aircraft industries, etc.)

This summary as well as the book can be found at
http://www.fatbrain.com. The book is listed at $113.00 and has 450
It was published in May 1999.

Nondestructive Characterization of Materials: Materials Research Society
Symposium Proceedings, Volume 591- T. Matikas, N. Meyendorf, G.
R. Gilmore (editors)
NDE has become an integral part of materials research. It offers
the possibility to determine/gauge material parameters and defects at
nearly any point, line, surface or volume element of interest, and at
nearly any state during the life of the material. Because NDE is not a
single field, but rather a synergism of many scientific and engineering
disciplines, this volumes brings together a range of scientists,
and academicians to focus and report on multidisciplinary approaches to
solving materials characterization problems. Topics include: process
control and deformation behavior via X-ray techniques; NDE for fracture,
fatigue and corrosion; electric and dielectric NDE; structure-sensitive
properties for NDE characterization; NDE for silicon wafers and thin
and optical and infrared techniques.

This volume (containing 46 papers) is available from the Materials
Research Society (MRS) at http://www.mrs.org/publicatons/books/. It was
published in Spring 2000 and has 322 pages.The book is priced at $78.00
MRS members, $90.00 in the U.S., and $103.00 worldwide

Nondestructive Characterization of Materials in Aging Systems: Materials
Research Society Symposium Proceedings, Volume 593- R.L. Crane, S.P.
R. Gilmore, J.D. Achenbach, P.T. Khuri-Yakub, T.E. Matikas (editors)
Nondestructive evaluation (NDE) can provide accurate data about the
health of materials in aging systems, including aircraft, bridges,
reactors, roads, ships, industrial manufacturing facilities, storage
vessels for both toxic and nontoxic substances, and electronic hardware.
Special emphasis is given to the structural health of concrete, defects
high-strength aircraft materials, and the characterization of steels in
nuclear reactors.

This volume (containing 43 papers) is available from the Materials
Research Society (MRS) at http://www.mrs.org/publications/books/. It was
published in Spring 1998 and has 342 pages. The book is priced at $62.00
for MRS members, $71.00 in the U.S., and $81.00 worldwide.

Nondestructive Testing of Pavements and Backcalculation of Moduli, Third
Volume- Shiraz D. Tayabi and Erland O. Lukanen (editors)
More than 30 papers present a comprehensive overview of the latest
advances in and the future direction of nondestructive testing (NDT) of
airport and highway pavement using conventional falling weight
deflectometer (FWD) technique and other promising techniques such as
penetrating radar (GPR), rolling weight deflectometer (RWD) testing, and
seismic techniques.

This book is available from the American Society for Testing and
Materials at http://www.astm.org. It was published in March 2000 and has
546 pages. The book is priced at $95.00 in North America and $105.00

Pavement Subgrade, Unbound Materials and Nondestructive Testing:
Proceedings of Sessions of Geo-Denver 2000- Michael S. Mamlouk (editor)
This book comprised of technical papers presented at Geo-Denver
2000 held August 5-8 2000. The papers cover pavement nondestructive
using falling weight deflectometer (FWD), high-speed rolling
and spectral-analysis-of-surface-waves (SASW) techniques.

The proceedings are available from the American Society of Civil
Engineers at http://www.asce.org. They were published in June 2000 and
176 pages. The book is priced at $35.00.

Review of Progress in Quantitive Nondestructive Evaluation, Volume 19
Conference Proceedings, Volume 509)- Donald O. Thompson and Dale E.
Chimenti (editors).
These proceedings contain edited papers of most of the
presentations at the 26th Annual Review of Progress in Quantitative
Nondestructive Evaluation (NDE) held in July 1999. The sessions covered
phases of NDE engineering from fundamentals to prototypes and included
various branches of science from acoustics to X-rays. Part A of the
proceedings broadly treats subjects related in technique development in
established NDE procedures, while Part B is dedicated to materials
characterization, material system, and new techniques and applications.

The casebound, two-volume set is available from the American
Institute of Physics as http://www.aip.org. It was published in April
and has 2,228. The set is priced at $325.00, which includes a CD-ROM.

3. Price List of NTIAC Publications US

Technology Assesment of Optical Methods for
Nondestructive Evaluation (Part I) NTIAC-80-2 $20

Technology Assesment of Optical Methods for
Nondestructive Evaluation (Part II)NTIAC-81-1 $20

Nondestructive Evaluation of Fiber Reinforced
Composites, Vol. I NTIAC-82-1 $20

Ultrasonic Transducers- Performance Variability,
Design, and Manufacturing Procedures NTIAC-84-1 $20

Automated Radiography, 2nd ed. NTIAC-84-2 $30

NDE Methods for Characterization of Corrosion NTIAC-88-1 $30

Nondestructive Evaluation of Adhesive Bond Quality NTIAC-89-1
$30 $40

Assessment and Prospects for Improved NDE Bearing
Inspection Technology NTIAC-90-1 $30

The Application of Digital signal Processing and Pattern Recognition to
Ultrasonic and Electromagnetic Nondestructive Testing and Evaluation
NTIAC-90-2 $30 $40

Microwave Nondestructive Evaluation NTIAC-95-01 $50

Heat Damage in Graphite epoxy composites: Degradation

Measurement and Detection NTIAC-SR-98-02
$75 $85

NDE of Hidden Corrosion NTIAC-SR-98-03
$75 $85

NDE of Cracks in Aircraft NTIAC-SR-98-04
$75 $85

Laser Ultrasonics NTIAC-TA-98-01
$55 $65

NDE of Process Control of Polymer
Matrix Composites NTIAC-TA-98-02
$55 $65

For further information, call Shelly Clark at (512) 263-3530, or e-mail

4. New NDT Publication from American Welding Society

Inspection Trends is a new quarterly publication from the American
Society. The AWS describes the publication as:

"...edited for personnel whose main function is to inspect and test
materials and welds for integrity and provide training for such
The editorial is practical in nature with an emphasis on trends,
technology, issues of concern in the profession, safety, case histories
basic information
on methodology."

The publication is free if you are a member of AWS or you can purchase a
subscription. For more information please contact the American Welding
Society at 1-800-443-WELD.

5. Offshore NDT Information Web Locations

The oil and gas industry, with its numerous offshore platforms and
extensive network of pipelines, is a significant user of NDT
necessary to assess the structural integrity of these installations.
Underwater testing of welds in pielines is regularly performed for crack
detection using visual, magnetic, electromagnetic, ultrasonic or
radiographic techniques.
The following is a selection of offshore NDT-related homepages:
The homepage of CAN Offshore at http://www.canoffshore.ltd.uk
contains basic information on several non-destructive inspection
used for the oil and gas industry. A brief description of the
of NDT techniques such as radiography and eddy current is accompanied by
photograph depicting on-site testing. Some striking images are given of
rope access inspection applications allowing the NDT inspector to reach
otherwise inaccessible locations. Core Technical homepage
(http://www.coretechnical.com) also offers dazzling views of rope access
NDT operations.
An overview of ultrasonic B-scan capabilities for detection of
corrosion damage on offshore platforms is available at the Deepwater
Corrosion Services site (http://www.deepcorr.com).
Several full text articles related to non-destructive examination
of offshore structures and underwater pipelines are also available
Among these, the one by E A Ginzel entitled "Mechanised ultrasonic
inspection of offshore platform structures" is published in the January
1998 issue of NDTnet. This article is located at
For an insight into the use of remotely operated vehicles (ROVs)
for underwater applications, access http://www.diveweb.com. This DiveWeb
site is divided into information resources on ROVs, marine technology,
offshore, inland/coastal, commercial and technical diving. A selection
worthwhile ROVs-related articles discussing innovations in remote
intervention from the offshore oil industry is also accessible. Progress
ROV control systems for improved manipulation of underwater vehicles,
recent research work carried out at the Japan Marine Science and
Center (http://w3.jamstec.go/jp/) that makes use of a single optical
for ROV control. In addition, research in teleprogramming for subsea
intervention is described at
http://www.cis.upenn.edu/~sayers/tele/subsea.html. The telerobot
of the University of Western Australia allows hands-on on robotics
manipulation via the Internet. A 6-axis industrial robot has been made
available to Internet users at http://telerobot.mech.uwa.edu.au/ to gain
experience on robot manipulation.
The Norsk Elektro Optikk homepage located at
http://www.neo.no/index.html is a most useful commercial site, with
links and concise information about gas monitoring and pipeline
It also includes job oppurtunities and information for students (in
Norwegian only), an extensive list of publications on pipeline
and user manuals of visual inspection software that can be downloaded in
PDF format. Moreover, it displays NDT image results of field trials
performed using state-of-the-art video and advanced digital systems for
underwater inspection.

NOTE: This article was abstracted from: Insight, Vol. 41, no. 6,
June 1999

6. Penetrant Inspection, Hot or Cold How, When, and Why?

EDITOR'S NOTE: the following excerpt is translated from a newsletter
entitled "BabbCo Info," dated March 1999, and written by our colleagues
France at BabbCo, 3 avenue NageImackers, Zac du Val Joyeux, 78450
Villepreux. The excerpt deals with using penetrants to inspect uncooled
welds, and touches on some of the general issues involved when penetrant
inspection temperatures are elevated. The original article did not deal
with incresing the overall effectiveness of penetrant inspection by
heat. As the article which appears elsewhere in this newsletter
there is much to be considered and resolved concerning the effects of
on the penetrant inspection process.

The molecular movement of a liquid- a penetrant for example- is
directly related to the liquid's absolute temperature. The higher the
temperature, the greater the movement.
At 0 degrees Kelvin, each atom and each molecule is completely
immobile. Molecular movement increases by a factor of four with each
of increase on the Kelvin scale. Of what consequence is this for
The temperature of penetrant applied to a warm surface will quickly
rise to the same temperature as the inspection surface, thereby
the penetrant's molecular action. A heated penetrant will be less
and better able to penetrate flaws as well as displace any gases, oil,
water therein. Thus, a heated penetrant will more effectively fill a
In addition, when penetrants are heated, dwell times may be
reduced. Similarly, the developer step is faster; more quickly moving
penetrant molecules are more readily absorbed by the developer layer,
the developer dries faster.

Inspecting successive welds is an appropriate circumstance for
using heat with penetrant inspection, particularly when a piece's
temperature must remain elevated in order to avoid crystallization, such
might occur when a piece is repeatedly cooled to permit inspection, or
avoid a weld's developing fissures from being allowed to cool too
When inspecting heated surfaces with water washable penetrants, it
would be prudent to wipe the surface with a solvent or cleaner resistant
high temperatures, since boiling water may not rinse excess penetrant

NOTE: Abstracted from "Penetrant Progress" newsletter from Sherwin, Inc.
5530 Borwick Ave.,
Southgate, CA 90280

7. NDE Industry News

Lockheed Martin Begins Inspecting F-22
Composite Parts with Unique Laser Tool
Lockheed Martin Aeronautics Company has begun inspecting commposite
F-22 parts using its patented laser ultrasonic technology system, known
LaserUT. This technology enables affordable, high-volume inspection of
complex-contoured composite parts.
This marks the first production aircraft parts that have been
inspected using the advanced laser testing system, following years of
research and prototyping by Lockheed Martin its predecessors at Fort
Texas. The company has nine patents issued or pending for this
The next-generation combat aircraft will have a high percentage of
graphite epoxy composite material in their structures. Extensive
is required to ensure no flaws exist in many layers that comprise the
finished composite components. The LaserUT system requires very little
set-up time and performs high-resolution inspection in a tenth of the
compared to current water-coupled ultrasonic inspection systems.
"We recently inspected a large section of the F-22 engine inlet
duct in less than 2 hours using LaserUT compared to 24 hours with the
first-generation inspection equipment," said Russel W. Ford, Vice
of Aerostructures Manufacturing at Lockheed Martin Aeronautics Company.
"With this 90 percent reduction in inspection time, we expect to shorten
manufacturing span times by many weeks and to realize substansial cost
savings over the course of F-22 and Joint Strike Fighter production.
the accuracy of the system will help us achieve even higher standards of
The LaserUT system can handle complex-shaped parts up to 54 by 27
by 21 feet. The system is controlled by a Silicon Graphics Onyx II
supercomputer capable of advanced, real-time signal processing and data
analysis. The computer used a 64-bit R10000 processor with a throughout
capacity of at least 6.4 gigabytes per second. The system has a
user-friendly operator interface that provides the classic ultrasonic
presentations. It also provides real-time feedback to the operator, or
design and process engineers, for rapid configuration and proces
The technologies were developed with company funds and support from
the Air Force Research Laboratory's Materials and Manufacturing
at Wright-Patterson Air Force Base, Ohio.

8. Meetings and Symposia Calendar

December 3-8 COMADEM 2000- 13th International Congress and Exhibition on
Monitoring and Diagnostic Engineering Management,
The Houston Marriot Westside
Houston, Texas, USA. Contact: Henry C. Pusey, Society for
Machinery Failure
Prevention Technology, A Division of the Vibration
Institute, 4193 Sudley Road, Haymarket,
Virginia, 20169-2420, USA. Email: hcpusey@ix.netcom.com
Website: http://www.mfpt.org

December 5-7 2000 USAF Aircraft Structural Integrity Program (ASIP)
Hyatt Regency San Antonio, Texas, USA. Contact: Dr. Jack
Lincoln, ASC/EN, Wright-Patterson
AFB, Ohio, USA. Phone: (937) 426-2808 and ask for the 2000
USAF ASIP Conference Desk,
Fax: (937) 426-8755. Website: http://www.asipcon.com

February 24-28 Condition Monitoring 2001: A Conference on the
Integration of
Condition Monitoring Technologies for the Optimization of
Maintenance, Adam's Mark Hotel, San Antonio, Texas, USA.
Sponsored by the Society
of Tribologies and Lubrication Engineers (STLE). ContactL
Alex Barton, Phone:
(847) 698-5070, Email: abarton@2bartons.com Website:

March 26-27 ASTM Symposium on Composite Materials: Testing, Design,
and Acceptance Criteria, Hyatt Regency, Phoenix, Arizona,
USA. Contact: Dr.
Abdul-Hamid Zureick, School of Engineering, Georgia
Institute of Technology,
Atlanta, Georgia 30332-0355, USA. Phone:(404) 894-2294.
Fax: (404) 894-0211.
Email azureick@ce.gatech.edu or Dr. Alan T. Nettles,NASA,
Marchall, Space
Flight Center, ED34, Huntsville, Alabama 35812, USA. Phone:
(804) 864-8503.
Fax: (804) 864-8911. Email: alan.nettles@msfc.nasa.gov

April 2-5 55th Meeting of the Society for the Machinery Failure
Technology (MFPT), Ramada Plaza Resort Oceanfront Hotel,
Virginia Beach,
Virginia, USA. Theme: New Frontiers in Integrated
Diagnostics and Prognostics.
Contact: Henry or Sallie Pusey, 4193 Sudley Road,
Haymarket, Virginia 20169-2420,
USA. Phone: (703) 754-2334. Fax: (703) 754-9743 Email
Website: http://www.mfpt.org

June 25-28 National Space & Missile Materials Symposium (NSMMS),
Marriot Hotel
and the Monterey Convention Center, Monterey, California,
USA. Contact: Space
& Missile Materials Symposium, c/o Anteon Corporation, 5100
Springfield St.,
Suite 509, Dayton Ohio 45431, USA Phone: (937) 254-7950.
Fax: (937) 253-2296.
Website: http://www.usasymposium.com

NDTech website: http://www.ndtech.net
Email: info@ndtech.net

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