Skip to main content

CHARPY V NOTCH IMPACT TEST


CHARPY V NOTCH IMPACT TEST

Object: To determine the amount of energy absorbed in fracturing a standardized test piece at a specified temperature.

Method: A machined, notched specimen is broken by one blow from a pendulum. Because scatter occurs in the results, at least three specimens are used to assess the joint represented. Testing is carried out at a temperature specified in the appropriate application standard.

CHARPY V NOTCH IMPACT TEST
Reporting Results:
  1. Location and orientation of the notch. 
  2. Testing temperature.
  3. Energy absorbed in joules. 
  4. Description of fracture appearance.
  5. Location of any defects.
CHARPY V NOTCH IMPACT TEST

The Charpy impact test, measured in joules, is an assessment of TOUGHNESS. Transition temperature (curve) in steel.



Labels:

Popular posts from this blog

FILLET WELD FRACTURE TEST

FILLET WELD FRACTURE TEST Object :  To break the joint through the weld to permit examination of the fracture surfaces for flaws and to check root penetration and fusion. Method: The specimen is cut to length and a saw cut, normally 2 mm deep, is made along the center of the weld face. The specimen is fractured by bending or hammer blows. Reporting Results: Thickness of parent material.  Throat thickness and leg length.  Location of fracture. Appearance of joint after fracture. Depth of penetration / lack of penetration or fusion.
Read more

NDT ( NON DESTRUCTIVE TESTING )

NDT (NON DESTRUCTIVE   TESTING) :-  Non Destructive Testing in great variety are in world   wide used to detect variations in structure, minute changes in surface finish, the presence of cracks or other physical discontinuities, measure   the thickness   of materials   and   coatings   and   to   determine  other characteristics of industrial products. REASON'S FOR THE USE OF NDT: "NDT" is used by the manufacturers for the following reasons:  1. To ensure product reliability. 2. To make profit for the user. a)    To ensure customer satisfaction b)   To aid in better product reliability. c)    To control the manufacturing processes. d)   To lower the manufacturing costs. e)    To maintain uniform quality level. SOME OF THE MOST COMMON NDT METHODS ARE : 1.VISUAL ...
Read more

SIDE BEND TEST

SIDE BEND TEST Object: To determine the soundness of the weld metal and HAZ in a cross section. This may be preferred to the transverse bend test on thick materials. It is also used on processes or procedures expecting lack of fusion (e.g. thick plate using MIG). Method: The testing method is the same as that used for transverse bends except the cap and root are not ground flush, to allow testing across the complete weld. Report Results: Width and thickness of specimen.  Angle of bend. Diameter of former. Appearance of joint after bending e.g. type and location of flaws.
Read more