Medical University of South Carolina

Intelligent Automation, Inc.

Mohammad Faisal Haider

Victor Giurgiutiu

Michael Van Tooren

Banibrata Poddar

Lingyu Yu

Bin Lin

Robin James

Hanfei Mei

An in-situ fiber-optic temperature field measurement is disclosed that can allow process monitoring and diagnosis for thermoplastic composite welding and other applications. A distributed fiber-optic sensor can be permanently embedded in a thermoplastic welded structure when it is welded and left there to perform lifelong monitoring and inspection. The fiber optic sensor can include a dissolvable coating, or a coating matched to the composite material to be welded. Other applications include in-situ fiber-optic temperature field measurement on thermoset composite curing (autoclave), for thermoplastic and thermoset composites during compression molding, and for fiber-optic field measurements on freeze/thaw of large items of public health interest, such as stored or transported foodstuffs.

In-situ fiber-optic temperature field measurement during thermoplastic composite welding and other applications

Detection, identification, and monitoring of various composite-damage types such as impact damage, delaminations, etc. using angle-beam coupled guided waves and methods and systems that permit excitation with angle-beam techniques of certain composite-material guided-wave modes that cannot be excited in isotropic metals with angle-beam methods.

Angle-beam guided waves for composite-damage identification and monitoring

Computationally efficient, highly accurate, and cost-effective approach for detection of damage in a structure is described. Methods include a combined analysis in both global and local regions of a structure to predict the received wave signals at a location due to scattering of Lamb waves at a damage site. Through comparison of an actual received wave signal with the predicted signals, identification of damage location and/or type can be provided. Methods can be particularly beneficial when considering damage assessment in a complex structure that includes plate-like structures that include an extension off of a base plate, e.g., a stiffened structure.

Combined global-local structural health monitoring

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West Columbia, SC, United States of America

Mohammad Faisal Haider