NDT NewsWeb Archive '97

December'97 (Review of Nov '97)
    Christmas is coming soon! Only a few people can still obtain time to post 55 messages. Also on NDTnet we had a 20% decrise of usage. The newsgroup didn't discussed in depth technical subjects last month, instead the type of messages were strong business related, fortunately less pure advertising. Some introductions of test problems along with the commercial solution or request for equipment were posted.

    Here are some Topics

    • NDT, new pages on WWW
      - "Oscar Martínez Graullera" TRendS "Fast technologies for ultrasonic non destructive evaluation" is a Spanish Scientific Research Group. Currently research lines are: Ultrasonic beam forming for NDE, Digital Signal Processing Techniques, Fast Processing Architectures. Homepage
    • ultrasonic equipments
      We are interested on commercial PC programmable ultrasonic equipments .....
    • Check our fall newsletter
      , http://www.meic.com/Fall97.htm Our comments: A good online Newsletter but the announcement text was to short, we suggest to post at least a summarize or table of contents, e.g. ON-LINE STRESS MONITORING OF BATCH DIGESTER CRACKS.
    • What tubesheet mapping software do you use?
      "David Mackintosh" : .....software that displays the results of an eddy current heat-exchanger examination as a colour-coded tubesheet map.
    • Inspection of thin wall stainless steel circumferential butt welds
      Bill Cook : We have a client that has several thousand 1.5 mm to 4.5 mm ss pipe butt welds. The welding process is TIG. What system other than X-ray is suitable for these welds?
    • composite structure evaluation
      Jim Ramsbotham : Field evaluation of the structural integrity of large organic composite components ............. and portability of the equipment to do it. (Posted via NDT NewsWeb)
    • Ultrasonic testing of a hydraulic turbine shaft
      Walter Pawlikewich : We are trying to UT the condition of the shrink fit of a hub to hollow shaft of a hydraulic bulb turbine....... (Posted via NDT NewsWeb)
November'97
October '97
    After the summer break the newsgroup usage increased during September . But a level of 99 posts is still not much. That interest in the newsgroup exist, that is shown by 181 subscriptions for the SWRI newsgroup mailing list (plus 9).

    Here are some Topics

    • Ultrasonic Standard - (2 answers)
      ......making a UT notch standard in HF1 steel.
      That topic received some answeres
    • UT of Piping/Pipeline Girth Welds (2 answers)
      Does anyone have an opinion as to the minimum OD and wall thickness of pipe for which shear wave UT of girth (butt) welds is practially possible and meaningful? ...
      Attenuation of sound waves (3 answers)
      What properties of metal have the most influence on the attenuation of sound? Is it acoustic impedance, or hardness, or tensile strength, or something else? I need to identify the best metal for a lond ultrasonic delay line that will work at temperature up to 1000 C. It also must be corrosion resistant. So far in my experiments tungsten demonstrated the best sound transmission properties but it becomes brittle over time.
      Philippe Nasch (pnasch@iissun4.unil.ch) posted with his answer a list of 20 references!
    • a new ,chip x-ray lence
      Zhao (wcn@public.zz.ha.cn) from China informed the group with a copy of "From the New York Time " November 19, 1996 Physicists Invent Lens for Focusing X-Rays By MALCOLM W. BROWNE

    Browse other themes of the month, for instance NDT-Artificial Intelligence, guided wave inspection, Infra-Red Spectroscopy, Scanning for internal corrosion, ..... GO Show 09/97 Posts

September '97
    After only 118 messages in July we were down to about 70 messages in August! - One poster asked: "Is this a dead newsgroup???" A provocative reply was posted "Is NDT Dead?..If so why? " But let's hope that this temporary lack of interest in NDT is only due to summer vacations!

    There has been great interest in the SWRI newsgroup mailing list with subscriptions up to 172 from only 135 in May. Obviously one factor is the one click subscription process on NewsWeb. There were four job-seekers and three of them used the NDT News Web form on this page. With more than 150 visits each month NDT NewsWeb is well read by our readership.

    As usual spam (making $$, sex and so forth) were posted, even one NDT company still trying to get hits for their Homepage. But let's look at some of the more relevant messages.

    Here are some Topics

August '97
July '97
    Meet your colleague!
    New this month - NDT newsgroup active poster list.
    The list should help you to know more about your colleagues. To help you get started, we've added some extended profile information from the Dejanews Database to each email. We invite all users to use the form at the end of the list to add more personal information to the provided fields, e.g., Institution, Homepage. You can add your Homepage URL but we will add only educational, non-profit or personal Homepage links. Also you should be a real user, that means your name should be already on the list as an active frequent user. If you don't want your information included on the list, or if corrections are needed, just give us an email and we will change or delete the information. Note: This figures do not represent the total number of NDT newsgroup users. Of course, we can't provide any information on those individuals who read the messages, but do not post. Are there really 1000 users total?

    In conjunction with the public NDT user newsgroup list we have provided also a more detailed list of Members of the NDT Newsgroup Mailing List. We expected that most of these people would be more active; we were surprised not to see more posts from them to the Newsgroup.
    You can see that Plumstead William C. ASNT See 154 NDT Mailing List Members

    Browse some of last month's discussion topics
    Summer time on the newsgroup?
    In June we had only 142 messages ( down from 204 in May) and about 15% of those were nonsense or advertising. We don't include those 'off-topic' messages here. Of course there was still some useful information like conference announcements. Here are some examples of useful messages.

June '97

    The first NDT NewsWeb issue launched

    Introduction

    As a new service to our readers we opened this new department. With this service we want to help new users and those who are not familiar with the NDT Newsgroup. But this page should also present useful information for our Newsgroup veterans. The main functions are:

    • Highlighting of the last months' topical discussions.
    • A Newsgroup Library containing all related information and serving as an archive for this department.
    • Statistics for an overview on important figures.
    • And last not least a powerful search engine we have customized for easy interface with of the Dejanews Server.

    Come back and don't miss our monthly update.
    If you have any questions please contact
    Rolf Diederichs info@ndt.net

    The first Newsgroup Statistics. Including our comments on the Newsgroup usage.

    Browse some topic discussions

Before NDT NewsWeb launched

    Introduction
    The newsgroup "sci.techniques.testing.nondestructive" is dedicated to the exchange of information and discussion of issues relating to nondestructive testing of materials and structures.
    In February of 1995, Dr. Jones began the process of creating a Usenet newsgroup for nondestructive testing. In July of 1995, the sci.techniques.testing.nondestructive newsgroup was created, along with sci.techniques.testing.misc.
    More details can be found in the newsgroup charter.

    The newsgroup is gatewayed to the Nondestructive Evaluation (NDE) mailing list. The NDE mailing list provides a way for those who cannot receive the Usenet newsgroup to join in the discussion.

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© Rolf Diederichs 5. Jan 1998, info@ndt.net