DYE PENETRATION TEST AND ITS PROCEDURE

Objective Liquid penetrant processes are non-destructive testing methods for detecting discontinuities that are open to surface. They may be effectively used in the inspection of both ferrous and non-ferrous metals and on non-porous, non-metallic materials, such as ceramics, plastics and glass. Surface discontinuities, such as cracks, seams, laps, cold shuts and laminations, are indicated by … Read more

ULTRASONIC TESTING OF RAILS REQUIRED FOR FABRICATION OF POINTS AND CROSSINGS

ULTRASONIC TESTING OF RAILS REQUIRED FOR FABRICATION OF POINTS AND CROSSINGS New rails without bolt holes and suitable for laying in track are used for the fabrication of points and crossings. These rails, therefore, do not have any chance of fish bolt hole cracking or any progressive type of defects. The defects like pipe, seam, lap, inclusions, … Read more

Ultrasonic Testing: Ultrasonic Testing Procedure, Applications of Ultrasonic Testing

Ultrasonic Testing: Ultrasonic Testing Procedure, Applications of Ultrasonic Testing Ultrasonic Testing Ultrasonic testing is a non-destructive testing method used to detect and measure flaws or discontinuities in materials, typically metals and composites. This technique uses high frequency sound waves, typically above 20 kHz, that are transmitted through the material being tested. When the sound waves … Read more

Types of Non- destructive testing

Types of Non- destructive testing There are several types of non-destructive testing (NDT) methods, such as Visual inspection Radiographic testing Ultrasonic testing Magnetic particle testing Eddy current testing Liquid penetrant testing Acoustic emission testing Thermography Leak testing Tomography Shearography Holography Neutron Radiography Capillary Leak Test Laser Shearography X-ray Fluorescence (XRF) Acoustic Emission (AE) X-ray Diffraction … Read more

Non- destructive testing

Non- destructive testing Non-destructive testing (NDT) is a method of evaluating the properties of a material, component, or system without causing any damage. There are various techniques used in NDT such as visual inspection, ultrasonic testing, radiographic testing, magnetic particle testing, and liquid penetrant testing. These techniques are used in various industries, such as aerospace, … Read more

Difference between non- destructive testing destructive testing

Difference between non- destructive testing (NDT) destructive testing (DT) Non-destructive testing (NDT) is a method of evaluating the properties of a material, component or system without causing damage. NDT techniques include visual inspection, ultrasonic testing, radiographic testing, and more. Destructive testing, on the other hand, is a method of evaluating the properties of a material, … Read more

Procedure of Die Penetration (DP) Testing

Procedure of Die Penetration (DP) Testing Die Penetration (DP) testing is a method used to determine the hardness of a material. The procedure typically involves the following steps: The test material is prepared by cleaning and polishing the surface to be tested. A small indenter, typically made of tungsten carbide or diamond, is pressed into … Read more

Procedure of Magnetic Particle Testing (MPT)

Procedure of Magnetic Particle Testing (MPT) Magnetic particle testing (MPT) is a non-destructive testing method used to detect surface and subsurface defects in ferromagnetic materials such as iron and steel. The basic procedure of MPT involves the following steps: Clean and prepare the surface of the material to be tested. Apply a magnetic field to … Read more

Properties of Die Penetration (DP) Testing

Properties of Die Penetration (DP) Testing Die penetration (DP) testing is a method for measuring the ductility of a material. It involves using a pointed indenter to push into a material and measuring the depth of penetration. The following are some properties of DP testing: It is a simple and inexpensive method for measuring ductility. … Read more