1. S. Mandayam/ECE Dept./Rowan University Development of an Acoustic Emission Test Platform with a Biaxial Stress Loading System Joseph Oagaro, Shreekanth Mandayam, John L. Schmalzel and Ronnie K. Miller Electrical & Computer Engineering 201 Mullica Hill Road Glassboro, NJ 08028 (856) 256-5333 http://engineering.rowan.edu/

2. S. Mandayam/ECE Dept./Rowan University Project Objectives Design and develop test-platforms for performing Acoustic Emission (AE) measurements on defective pipe segments under bi-axial stress conditions Develop empirical relations between stress and AE signal parameters

3. S. Mandayam/ECE Dept./Rowan University Major Tasks Specimen fabrication Set-up for 2-D Tensile Testing Instrumentation (AE and control) and data acquisition set-up AE testing: collaboration with Physical Acoustics Corporation Signal analysis

4. S. Mandayam/ECE Dept./Rowan University Conceptual Design: Test Platform Data Acquisition Signal Conditioning Display/ User Interface Specimen Load Cell Simulated Defect Double Acting Hydraulic Ram AE Sensors

5. S. Mandayam/ECE Dept./Rowan University Test Station Design

6. S. Mandayam/ECE Dept./Rowan University AE Test Station 1/24/2003

7. S. Mandayam/ECE Dept./Rowan University Specimen Fabrication Specimens received from Shell Oil Also have in-house …………….. Rowan Waterjet Machining Center

8. S. Mandayam/ECE Dept./Rowan University Collaboration with PAC Rowan personnel were trained on AE system at PAC on August 22, 2002 4-Channel AE system was delivered to Rowan on September 26, 2002 Rowan personnel were trained on system by PAC

9. S. Mandayam/ECE Dept./Rowan University Test Parameters Axis-1: 20,000 lbs Axis-2: 10,000 lbs Saw-cut simulated crack

10. S. Mandayam/ECE Dept./Rowan University AE Results

11. S. Mandayam/ECE Dept./Rowan University AE Results

12. S. Mandayam/ECE Dept./Rowan University AE Results

13. S. Mandayam/ECE Dept./Rowan University AE Results

14. S. Mandayam/ECE Dept./Rowan University Future Steps Modify test platform design Test Shell specimens Parameterize AE signatures for 1-D and 2-D stress loading