Optical interferometric technique for deformation analysis

Area of Science:

• Materials Science
• Optical Physics
• Mechanical Engineering

Background:

• Material deformation analysis is crucial for predicting failure.
• Optical interferometry offers non-contact measurement capabilities.
• Understanding plastic deformation is key to material integrity.

Purpose of the Study:

• To introduce a novel optical interferometric technique for deformation analysis.
• To apply this technique to tensile testing of aluminum-based samples.
• To diagnose proximity to fracture, fracture location, and stress concentration.

Main Methods:

• Development of a unique optical interferometric technique.
• Application of the technique to tensile analysis of aluminum samples.
• Utilizing recent theories of plastic deformation for analysis.

Main Results:

• The technique successfully diagnosed the proximity to fracture.
• The technique identified the predicted fracture location.
• The technique quantified the degree of stress concentration.

Conclusions:

• The developed optical interferometric technique is effective for deformation analysis.
• This method provides critical insights into material behavior under tensile stress.
• The technique has significant potential for failure prediction in materials testing.