Search Results - nizar+lajnef

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AUTOMATED STRUCTURAL DAMAGE DETECTION AND LOCALIZATION USING MECHANICS-INFORMED DATA ANALYSIS

VAlue proposition Structural health monitoring ensures the safety and longevity of structures like buildings and bridges. As the volume and scale of structures and the impact of their failure continue to grow, there is a need for techniques that are scalable, inexpensive, can operate passively without human intervention, and are customized for each...
Published: 8/19/2025   |   Inventor(s): Vishnu Boddeti, Nizar Lajnef, Li Xuyang, Mahdi Masmoudi
Keywords(s):   Category(s): Test and Measurement

Sensing Platform for Dynamic Soil Properties in Autonomous Vehicles

VALUE PROPOSITION A sensing platform which generates real-time soil property data for offroad autonomous vehicle control. The target application of this technology in autonomous vehicle guidance for off-road applications. Such vehicles could include Humvees and agricultural tractors. While not limited to autonomous vehicles, this system could also...
Published: 7/1/2025   |   Inventor(s): Nizar Lajnef, Mahmood Haq, Satish Udpa
Keywords(s):   Category(s): Agriculture, Defense, Test and Measurement, Transportation

Methods for Estimating Remaining Life of a Monitored Structure

Executive SummaryUnderstanding how structures are deteriorating over time is critical to preserving safety and functionality while establishing a cost effective maintenance program. Recently, self-powered sensors have been developed for sensing fatigue in mechanical structures. It is desirable to develop robust data interpretation techniques that are...
Published: 3/5/2025   |   Inventor(s): Nizar Lajnef, Mohamed Rhimi
Keywords(s):   Category(s): Data Processing/Analysis, Materials, Test and Measurement

Quasi-Static Self-Powering, Sensing, and Data Logging

Executive SummarySlowly acting events can be very difficult to sense, especially for self-powered sensors. Most sensors require an external energy source in order to detect the desired property and report results. For some applications however, a self-powered sensor is desirable that uses energy from the object being sensed in order to record the data....
Published: 6/8/2021   |   Inventor(s): Nizar Lajnef, Shantanu Chakrabartty, Rigoberto Burgueno, Borchani Wassim
Keywords(s):   Category(s): Devices, Test and Measurement, Mechanical

Method and Apparatus for Autonomous Self-Powered Integrated Piezo-Floating Gate Sensors

IntroductionEach year, hundreds of thousands of hip and knee replacement surgeries are performed in the United States. Most of these prosthetic implants are expected to last for at least 20 years after which revision and replacement surgery will be required. In many cases, however, excessive wear and loosening of artificial joints leads to joint swelling,...
Published: 3/5/2025   |   Inventor(s): Shantanu Chakrabartty, Nizar Lajnef, Niell Elvin, Amit Gore
Keywords(s): Biomechanical Implants, Piezo-Electric Transducer, Structural Monitoring, Ultra-low Power Sensors, Wireless Sensors Category(s): Electrical, Devices, Test and Measurement