NDE with SQUIDs

Table of Contents

Sheet Inducers and Depth- Selective, Oriented Current Imaging

Sheet Inducer

Magnetic Field and Induced Eddy Currents

Phase of the Induced Eddy Current in Plate

Calculated Current Distribution and Magnetic Signal

Phase Analysis

Depth-Selective Technique

Current Vector, In Phase Component, Quadrature Component

Signal From Cracks Beneath Rivits

Magnetic Image of Cracks Adjacent to Rivits

Phase Analysis

Sample with Hidden Corrosion (7075-T6)

Orthognal Sheet Inducer

Rotating Current - Orthognal Inducer with 90^o Phase Shift

Self-Reference

Self-Reference for Cracks Adjacent to Hole

Self- Referencing and Phase Selection

Phase Related Signals

Self-Reference with Phase Analysis

Samples

Magnetic Image of Sample #1 (7075-T6-1)

Sample #1 (7075-T6-1) Phase

Magnetic Image of Sample #2 (A356-2)

Sample #2 (A356-2) Phase

Slots Beneath Weld

Signals from Slots on Top Surface of Sample

Signals of Slots from the Bottom of Surface_m

Face A with Open Notches, Face B without Open Notches

PC Orthongal Sheet Inducer

Frequency Optimization for Phase-Selection

Signals from Rotating Eddy Current

Current Angle, Amplitude, Phase Angle

Phase Angle, Amplitude, Current Angle

Self-Referencing Phase Angle 40

Second Layer Slots - Phase

Phase Analysis

Fatigue Cracks Sample

Detection for Fatigue Cracks beneath Rivits

Aluminum Capacitor

Field Map for Aluminum Capacitor

Aluminum Capacitor with a Copper Disk

Displacement currents are collected by leads through aluminum.....

Copper-Aluminum Capacitor

Magnetic Field of Capacitor

Copper-Aluminum Capacitor (Image Processing)

Increase Edges !!!

Copper Slotted Aluminum Capacitor

Copper Multi Hole Aluminum Capacitor

Unflawed and Flawed Bar

Unflawed Bar

Unflawed Bar

Flawed Bar with Breakage