Mohammad Modarres Nicole J. Kim Eminent Professor 301-405-5226 | modarres@umd.edu Profile

Current Research Topics

MTS Uniaxial Fatigue Testing Machines

• Two-post and Four-post machine rating at ± 100kN in tension or compression under static and cyclic conditions.
• Fatigue life assessment based on energy release.
• Fatigue crack initiation based on entropy generation.

Optical Microscopy for Short Fatigue Crack

• 25 to 10X Microscope with C-mount adaptor for the video port. Magnification of 25X to 100X can be increased to as high as 200X. Simultaneous visual and video viewing.
• Short crack detection in fatigue.
• Visualization of crack growth.

Acoustic Emission Technique for Crack Initiation and Growth 

• Sensors and amplifiers to collect and amplify the signals, a data acquisition module to perform front-end filtration and record the signals, and a software moduleto visualize the data and to perform the required analysis such as feature extraction and source location.
• Assessment of crack initiation.
• Large crack growth modeling.
• Information entropy analysis of AE signals for crack initiation.

Heating Chamber for Creep Testing

• Exposure of specimen under controlled heat up to 700oC.
• Probabilistic modeling of creep.
• Fatigue-creep testing capability.

Corrosive Medium Chamber

• Probabilistic corrosion-Fatigue model development in piping.
• Probabilistic pitting corrosion in pipes.
• Probabilistic stress corrosion in piping.