Skip to main content

TRANSVERSE TENSILE TEST

TRANSVERSE TENSILE TEST

Object:   Used to measure the transverse tensile strength under static loading of a butt joint employing butt welds.
The reduced section tensile test normally fails in the parent metal and so it is not designed to give the tensile strength of the weld.
The radius reduced tensile test is a test of the as deposited diluted weld metal.
The all weld tensile test, using a longitudinal section from the weld only, is used to check the as deposited undiluted weld metal. (Usually used by consumable manufacturers.)

Method: The test piece is clamped at each end and a load is applied by an hydraulic or screw mechanism. The load is increased until fracture occurs.

Reporting Results:
  1. Type of specimen (e.g. reduced section). 
  2. Whether excess eld metal is removed or not.
  3. Tensile strength, in Newtons per mm squared, is calculated from maximum load and original cross sectional area. When excess weld metal is not removed, the cross sectional area shall be the prod uct of the parent metal thickness and the width of the specimen.
  4. Location of fracture - whether in parent plate, heat affected zone or weld metal. If the fracture is in the parent metal, the distance from the weld zone shall be stated. 
  5. Location and type of any flaws present on the fracture surface.

The test gives a measure of percentage elongation, percentage reduction in area and ultimate
tensile strength.

The tensile test gives a measure of DUCTILITY.
(in Newtons per mm squared), a combination of percentage elongation and percentage reduction in area.
Labels:

Popular posts from this blog

BEND TESTS

BEND TESTS Object:   To determine the soundness of weld metal, heat affected zone and weld zone.These tests may also be used to give some measure of the ductility of the weld zone. It is not usual to use transverse and longitudinal bend tests for the same application. Method:   All specimens to be removed and prepared without causing significant distortion or heating. The cap and root are ground flush. The specimen is bent by the movement of a former of prescribed diameter, the relevant side of the specimen to be placed in tension. Angle of bend and diameter of former should be as specified in the appropriate standard. Reporting Results: Thickness of specimen Direction of bend (root or face) Angle of bend Diameter of former Appearance of joint after bending e.g. type and location of flaws
Read more

Part - 6 Most commonly asked Mechanical Interview Questions with answer

Most commonly asked Mechanical Interview Questions  1.           Why Entropy decreases with increase in temperature? Ans.      ds=dQ/T Entropy is inversely proportional to the temperature so, as temp. Increases, entropy decreases. 2.            Why different types of sound are produced in different bikes, though they run on SI Engines? Ans.        Engine specifications are different in different manufactures like as Bore Diameter (CC), Ignition timing. Also the exhaust passage takes more responsible for sound. 3.            How much Watt means 1Hp? Ans.       746.2 Watt 4.            Explain Bicycle Rear Wheel Sprocket working? Ans.       Rear wheel sprocket works u...
Read more

Part -3 Most commonly asked Mechanical Interview Questions

Most commonly asked Mechanical Interview Questions with answer 1. What is the difference between Technology and Engineering? Ans. Engineering is application of science. Technology shows various methods of Engineering. A bridge can be made by using beams to bear the load,by an arc or by hanging in a cable; all shows different technology but comes under civil engineering and science applied is laws of force/load distribution. 2. How to Measure Temperature in Wet Bulb Thermometer? Ans. Wet bulb temperature is measured in a wet bulb thermometer by covering the bulb with a wick and wetting it with water. It corresponds to the dew point temperature and relative humidity. 3. What are the Advantages and Disadvantages of using LPG in Car? Ans. Advantages 1. Complete combustion 2. Fuel saving 3. Homogenous combustion Disadvantages 1. As complete combustion is occurring ,more heat liberated,not advised for long journey, engine will be over heated 2. In...
Read more