DESTRUCTIVE AND NON-DESTRUCTIVE TESTING

 DESTRUCTIVE AND NON-DESTRUCTIVE TESTING

Testing is the physical performance of the operations to determine the qualitative measure to certain properties such as mechanical. Testing aims to determine the quality.

Types of Testing-

There are two types of testing
1. Destructive Testing
2. Non-Destructive Testing

1. Destructive Testing

The destructive testing is the testing in which test piece or specimen is destroyed during the test. After testing the specimen remain no longer to useful for further use.
The following destructive test are-
a. Tensile testing (TT)
b. Bend testing (BT)
c. Impact testing (IT)
d. Nick-break testing (NBT)
e. Hardness testing (HT)
f. Etch testing (ET)

2. Non-Destructive Testing

The Non-destructive testing is the testing in which test piece or specimen is not destroyed during the test. After testing the specimen is useful for further use.
The following non-destructive test are-
a. Visual testing (VT)
b. Stethoscopic test (ST)
c. X-Ray & Gama Ray test
d. Magnetic particle testing (MT)
e. Fluorescent penetrant testing (FT)
f. Ultrasonic testing (UT)
g. Eddy current test (ECT)
h. Acoustic emission testing (AT)

Difference between destructive & non-destructive testing

Destructive Testing-
1.Used for finding out the chemical & physical properties of materials.
2. Load is applied on the materials.
3. Test specimen get deformed or damaged during the test process.
4. Special equipment are required.
5. Destructive testing is more expensive and time consuming.
6. Skill labors are required.
7. Destructive testing is extremely useful for design purpose.
8. The tested items can not be used for its intended purpose.

Non-Destructive Testing-
1. Used for finding out the defects of materials.
2. No load is applied on the materials.
3. Test specimen does not deformed or damaged during the test process.
4. No special equipment are required.
5. Non-destructive testing is not expensive and time consuming.
6. No skill labors are required because its simple.
7. Non-destructive testing is great for spotting early deterioration signs of working equipment.
8. The tested items can be used for its intended purpose.

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