The Everyday Pocket Handbook for Visual inspection and Weld Discontinuities-Causes and Remedies

{تخصصی بازرسی فنی}--35 صفحه--محصول 1996

A GUIDE FOR ULTRASONIC TESTING AND EVALUATION OF WELD FLAWS

{تخصصی بازرسی فنی}

محصول 1970

22 صفحه

ABSTRACT

This document presents procedures and acceptance limits
for contact ultrasonic inspection of steel butt welds in the
thickness range of 1/4 to 2 inches. The acceptance limits described
in the following sections are compatible with those set
forth in SSC-177, “Guide for Interpretation of Nondestructive
Tests of Welds in Ship Hull Structures” for radiographic inspection
and should therefore result in satisfactory ship welds.

Introduction to Non-destructive Testing

{عمومی بازرسی فنی}--43 صفحه--معرفی کلی NDT و شیوه های مختلف آن

Weld Inspection

{عمومی بازرسی فنی}--خلاصه--40 صفحه--لینک دانلود رایگان-->>

http://uploadboy.me/xvvkttsq30gs/Weld Inspection.zip

Phased Array Ultrasonic Testing of Welded Joints in Plastic (PE) Pipes

{تخصصی بازرسی فنی}--12 صفحه--محصول 2012--لینک دانلود رایگان-->>

http://uploadboy.me/zbqt1an8azun/Phased Array Ultrasonic Testing of Welded Joints in Plastic Pipes.zip

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Abstract
A reliable Non-Destructive Testing approach is required for the inspection of polyethylene (PE) butt fusion
joints in various material grades and pipe sizes. The nature of butt fusion joints is that the fusion zone is
relatively small and the inspection solutions are often restricted by the existence of an external weld bead. This
weld bead restricts the probe placement and the probe needs to be positioned in a non-optimal position for the
weld inspection. The PE material grades have low velocity and high frequency dependent attenuation, which will
complicate the inspection of thicker pipes. In this paper, phased array ultrasonic techniques are presented and
their capabilities are evaluated. The techniques utilise customised water wedges to be able to generate forward
angle beams to cover the weld within the PE pipe. Techniques have been developed for pipes with outer
diameters between 220-710mm and thicknesses between 14-45mm. Probe and wedge parameters have been
optimised for this range of pipes. The capability of detecting circular defects with diameters between 1.5-8mm
on pipes with an outer diameter between 220-710mm using a phased array ultrasonic inspection solution, and the
challenges overcome when working with this type of material, are presented.