公开(公告)号：US11193964B2

公开(公告)日：2021-12-07

申请号：US16431370

申请日：2019-06-04

Applicant: Purdue Research Foundation

Inventor： Abhijeet Dhiman ,  Vikas Tomar ,  Animesh Sharma ,  Alexey Shashurin ,  Sergey O Macheret

IPC: G01R27/26 ,  G01L1/10 ,  G01K11/26 ,  G01L1/12 ,  G01K1/024 ,  G01K7/32

Abstract: A method of determining stress within a composite structure is provided which includes coupling a sensor to a composite structure under load having embedded therein a plurality of particles, wherein the particles at room temperature are paraelectric or ferroelectric, transmitting an electromagnetic radiation to the sensor, thereby generating an electromagnetic field into the composite structure, sweeping frequency from a first frequency to a second frequency in a pulsed manner, receiving reflected power from the composite structure, determining the resonance frequency of the sensor, and translating the resonance frequency of the sensor to stress within the composite structure.

公开(公告)号：US20210057786A1

公开(公告)日：2021-02-25

申请号：US16557954

申请日：2019-08-30

Applicant: Purdue Research Foundation

Inventor： Vikas Tomar ,  Bing Li ,  Vilas G. Pol ,  Ryan Andrew Adams ,  Mihit Hitendra Parekh

IPC: H01M10/48 ,  H01M2/16 ,  H01M4/38 ,  H01M4/525 ,  H01M4/66

Abstract: A battery having a thermal protection arrangement is disclosed which includes a housing, a first electrode, a second electrode, a polymer porous separator positioned between the first electrode and the second electrode, an electrolyte interspersed between the first electrode, the second electrode, and the polymer porous separator, at least one sensor holder having an electrode side and a housing side, with at least one cavity provided on the electrode side, the at least one sensor holder in firm contact with the first electrode or the second electrode, and at least one temperature sensor placed in the at least one cavity of the at least one sensor holder, the at least one cavity sized such that the outer surface of the temperature sensor being flush with remaining surface of the at least one sensor holder, and wherein the at least one temperature sensor has no contact with the polymer porous separator.