公开(公告)号：US11958255B2

公开(公告)日：2024-04-16

申请号：US16367541

申请日：2019-03-28

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Victor Giurgiutiu ,  Michael Van Tooren ,  Bin Lin ,  Lingyu Yu ,  Mohammad Faisal Haider

IPC: B29C65/00 ,  B29C65/36 ,  B29K307/04 ,  G01K11/32

CPC classification number: B29C66/91221 ,  B29C65/3636 ,  B29C65/3696 ,  B29C66/7212 ,  B29C66/73921 ,  B29C66/91211 ,  G01K11/32 ,  B29K2307/04

Abstract: 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.

公开(公告)号：US20200039153A1

公开(公告)日：2020-02-06

申请号：US16367541

申请日：2019-03-28

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Victor Giurgiutiu ,  Michael Van Tooren ,  Bin Lin ,  Lingyu Yu ,  Mohammad Faisal Haider

IPC: B29C65/00 ,  G01K11/32 ,  B29C65/36

Abstract: 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.

公开(公告)号：US11740206B2

公开(公告)日：2023-08-29

申请号：US17024906

申请日：2020-09-18

Applicant: University of South Carolina

Inventor： Victor Giurgiutiu ,  Robin James ,  Hanfei Mei ,  Mohammad Faisal Haider

IPC: G01N29/04 ,  G01N29/07

CPC classification number: G01N29/041 ,  G01N29/075

Abstract: 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.

公开(公告)号：US20210148861A1

公开(公告)日：2021-05-20

申请号：US17024906

申请日：2020-09-18

Applicant: University of South Carolina

Inventor： Victor Giurgiutiu ,  Robin James ,  Hanfei Mei ,  Mohammad Faisal Haider

IPC: G01N29/04 ,  G01N29/07

Abstract: 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.

公开(公告)号：US10983095B2

公开(公告)日：2021-04-20

申请号：US16397285

申请日：2019-04-29

Applicant: UNIVERSITY OF SOUTH CAROLINA

Inventor： Victor Giurgiutiu ,  Mohammad Faisal Haider ,  Banibrata Poddar

IPC: G01N29/04 ,  G01N29/24 ,  G01N29/07

Abstract: 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.