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كل شيء عن الــ NDT & Inspection

  1. #21
    عضو تحرير المجلة

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    Leak Test

    Leak Test


    • Leak test is the determination of the rate at which a liquid or gas will penetrate from inside a (Tight) component or assembly to the outside or vice versa as a result of
    a pressure differential between the Two regions or of permeation of a somewhat extended barrier.
    • Type of leaks:
    1 - Real leaks.
    2 - Virtual leaks.


    Methods of Leak Test

    1 - Gas system at pressure.
    a- Direct sensing.
    b- Gas detection.
    c- Quantity loss determination by:
    c-1 Weighing.
    c-2 Gauging differential pressure.
    2 - Liquid system at pressure.
    3 - Vacuum systems at pressure.

    Applications of Leak Test
    a. Piping and pressure vessels.
    b. Evacuated systems.
    c. Hermetic seals.
    d. Electrical and electronic components.



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    Best Regards
    Majdi N. Elyyan

  2. #22
    عضو تحرير المجلة

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    Acoustic Emission testing

    Acoustic Emission testing


    • Acoustic Emission (AE) is a unique NDT technique where the material being inspected generates signals that worn of impending failure.
    • Acoustic emission testing is based on the fact that solid materials emit sound or acoustic emissions when they are mechanically or thermally stressed to the point where deformation or fracturing occurs. Almost all materials produce an acoustic emission when they are stressed to failure. Some deformations and fractures are so minute and beyond the range of normal hearing and well into Ultrasonic range ( Above 20000 Hz/Sec.).


    Applications of AE

    1- Corrosion, leaks and weld defects in storage tanks,
    high pressure vessels and sphere tanks.
    2- Monitoring of bearing, valves, steam traps, fatigue
    and fracture mechanics problems.
    3- Buried pipeline monitoring.



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    Best Regards
    Majdi N. Elyyan

  3. #23

  4. #24
    عضو فعال

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    السلام عليكم
    بارك الله فيك يا اخي على هذا الموقع وعلى هذا الطرح القيم
    وجزاك عنا الف خير

    اخوك


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  5. #25
    عضو شرف

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    NDT Course Material

    -
    NDT Course Material:
    The NDT educational materials at the following links were developed primarily for college students: 1) to aid in conceptual learning, 2) to re-enforce materials provided at the student's school, and 3) to serve as reference materials and working tools. The materials are not intended to be a stand alone course in NDT but rather to supplement materials currently used in college NDT programs. The materials contain some interactive Flash and Java applets which help illustrate important concepts and can be used as NDT calculators. While the target audience in college students, NDT professionals may find the information interesting as useful as well.

    NDT Introduction

    http://www.ndt-ed.org/EducationResou...itycollege.htm

    يحتوى على الموضوعات الاتيه

    Common NDT Methods
    Visual/Optical Testing (VT/OT)
    Penetrant Testing (PT)
    Magnetic Particle Testing (MT)
    Ultrasonic Testing (UT)
    Eddy Current Testing (ET)
    Radiographic Testing (RT)
    Radiation Safety


    Specialized NDT Methods
    Acoustic Emission Testing (AE)
    Infrared/Thermal Testing (IRT)
    Remote Field Testing (RFT)



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  6. #26

  7. #27

  8. #28
    عضو متميز

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    كل شيئ عن Ndt & Inspection

    بعض المواقع والمعلومات المهمه عن الاختبارات غير المتلفه للمعادن متجدد باستمرار(وارجو التثبيت لتعم الفائده)

    هذا الموقع رائع باللغة الانجليزيةعن N T D

    http://www.ndt-ed.org/EducationResou...highschool.htm


    0 Not allowed!
    التعديل الأخير تم بواسطة eng_ahmed_moh ; 2006-12-05 الساعة 06:26 PM

  9. #29
    عضو متميز

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    السلام عليكم

    هذة التقنية تسمى الاختبارات غير الاتلافية NDT
    1- الموجات فوق الصوتية
    2- التصوير الاشعاعى
    3- السائل المتغلغل
    4- الحبيبات الممغنطة

    موقع الجمعية الامريكية http://www.asnt.org
    :019:
    :hapy: NDT Applications and Theory

    http://www.panametrics-ndt.com/ndt/ndt_technology


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  10. #30

صفحة 3 من 47 الأولىالأولى 123456713 ... الأخيرةالأخيرة

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