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1-4 Issue 01, 04/2005 Krautkramer USM 35X

Introduction Important information on ultrasonic testing

Operator training

The operation of an ultrasonic test device requires a

proper training in ultrasonic test methods.

A proper training comprises for example adequate

knowledge of:

• the theory of sound propagation

• the effects of sound velocity in the test material

• the behavior of the sound wave at interfaces be-

tween different materials

• the propagation of the sound beam

• the influence of sound attenuation in the test object

and the influence of surface quality of the test ob-

ject.

Lack of such knowledge could lead to false test results

with unforeseeable consequences. You can contact for

example NDT societies or organizations in your country

(DGZfP in Germany; ASNT in the USA), or also GE

Inspection Technologies, for information concerning

existing possibilities for the training of ultrasonic in-

spectors as well as on the qualifications and certifi-

cates that can finally be obtained.

Technical test requirements

Every ultrasonic test is subject to specific technical

test requirements. The most important ones are:

• the definition of the scope of inspection

• the choice of the appropriate test method

• the consideration of material properties

• the determination of limits for recording and

evaluation.

It is the task of those with overall responsibility for test-

ing to ensure that the inspector is fully informed about

these requirements. The best basis for such information

is experience with identical test objects. It is also es-

sential that the relevant test specifications be clearly

and completely understood by the inspector.

GE Inspection Technologies regularly holds specialized

training courses in the field of ultrasonic testing. The

scheduled dates for these courses will be given to you

on request.