Nugget Profiler, Comparison with other inspection methods

The contents of
detection

The amount of change of metallographic structure

Distance to the changing point of acoustic impedance

Mechanical strength

A thing to be examined

Only iron

Iron, Nonferrous metal

Iron, Nonferrous metal

Area which can be
inspected.

〇
The part which does not have a convex around an inspection side
(Contact area size is 18x10mm)

◎ : Single type
○ : Array type

△
Area where tool cannot be inserted is impossible.

Quantification of a nugget

○

× : Single type
△ : Array type

×

Distinction with
Cold-joint

○
(comparison of a value in fixed quantity)

△

○

Damage to the test object

None

Wiping of water and oil is required.
=>Metal corrosion

A bend occurs. Tapping-back is necessary.
=>Metal fatigue

Inspection of three sheets

△
(Inspection from surface and back side)

○

△
(Inspection from surface and back side)

Application to
High-tension steel

○

○

△
(Those with a possibility of cracking a welding part. )

Inspection time

○

△

◎

Traceability

○

○

×