No Weld

A No Weld condition occurs when not enough heat is generated at the part interface.

Probable Causes:

	Weld Tips are too large, which increases the weld area and decreases the current concentration.
	Weld Current is low.
	Weld Time is too short.

Detecting this condition with Ultrasonic Inspection:
Ultrasonic inspection allows you to non-destructively identify acceptable and defective Weld Nuggets. During ultrasonic inspection, a transducer probe sends sound waves through a weld nugget and the results are displayed graphically. The three conditions that are analyzed from the graph are Attenuation, Spacing, and Interface Echoes.

What a good weld ultrasonic inspection graph looks like:

	Good Weld Attenuation Graph
	Good Weld Spacing Graph
	Good Weld Interface Echoes Graph

What a no weld ultrasonic inspection graph looks like:

	No Weld Attenuation Graph
	No Weld Spacing Graph
	No Weld Interface Echoes Graph