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Non-contact damage monitoring technique for FRP laminates using guided waves
Mohit Garg,Shruti Sharma,등록되었습니다.,Rajeev Mehta 국제구조공학회 2016 Smart Structures and Systems, An International Jou Vol.17 No.5
A non-contact, in-situ and non-invasive technique for health monitoring of submerged fiber reinforced polymers (FRP) laminates has been developed using ultrasonic guided waves. A pair of mobile transducers at specific angles of incidence to the submerged FRP specimen was used to excite Lamb wave modes. Lamb wave modes were used for comprehensive inspection of various types of manufacturing defects like air gaps and missing epoxy, introduced during manufacturing of FRP using Vacuum Assisted Resin Infusion Molding (VARIM). Further service induced damages like notches and surface defects were also studied and evaluated using guided waves. Quantitative evaluation of transmitted ultrasonic signal in defect ridden FRPs vis-à-vis healthy signal has been used to relate the extent of damage in FRPs. The developed technique has the potential to develop into a quick, real time health monitoring tool for judging the service worthiness of FRPs.
Bony fusion of the maxilla and mandible as a sequelae of noma: A rare case report
Shivanand B. Bagewadi,Ujjwala Rastogi Awasthi,Bharat M. Mody,Gundareddy N. Suma,Shruti Garg 대한영상치의학회 2015 Imaging Science in Dentistry Vol.45 No.3
Noma is a gangrenous disease of the orofacial region that leads to severe facial tissue destruction and is a significant cause of death among children. With the advent of modern antibiotics and improved nutrition, children with noma may survive into adulthood, but must face the challenge of undergoing repair of the sequelae of noma. This report describes a case of bony fusion of the maxilla and mandible in a 28-year-old female patient, which was a sequelae of a childhood case of noma.
Bony fusion of the maxilla and mandible as a sequelae of noma: A rare case report
Bagewadi, Shivanand B.,Awasthi, Ujjwala Rastogi,Mody, Bharat M.,Suma, Gundareddy N.,Garg, Shruti Korean Academy of Oral and Maxillofacial Radiology 2015 Imaging Science in Dentistry Vol.46 No.1
Noma is a gangrenous disease of the orofacial region that leads to severe facial tissue destruction and is a significant cause of death among children. With the advent of modern antibiotics and improved nutrition, children with noma may survive into adulthood, but must face the challenge of undergoing repair of the sequelae of noma. This report describes a case of bony fusion of the maxilla and mandible in a 28-year-old female patient, which was a sequelae of a childhood case of noma.