1.Applied research in fatigue, fatigue crack growth and fracture2.Guided two Ph.D programs on fatigue crack growth, crack closure and short crack behavior3.Developed fatigue life to crack initiation model based on local stress-strain approach 4.Developed fatigue crack growth life prediction model based on effective stress intensity factor range using crack closure concepts5.Carried out fatigue life evaluation of LCA fin to fuselage fitting6.As project leader of HANSA executed all structural certification testing of HANSA from coupon level to full component level. Developed the building block approach for HANSA structural certification testing7.Project leader of SARAS, I was in-charge of structural test on wing, fuselage and H.T. Also in charge of fatigue and damage tolerance evaluation of SARAS airframe. Developed the full scale static test set up for SARAS fuselage and wing8.Participated in full scale fatigue testing of Ajeet and MiG 21 M airframe9.Project leader for the MiG-21 BIS airframe. Developed the test load spectrum for the test load spectrum for the airframe. Designed and developed the whiffle tree loading arrangements for the FSFT. Guided the in-house development of full scale fatigue test control hardware and software. Interpreted the FSFT results.As Head of Structural Integrity Division I have:1)Developed a rational full scale fatigue test concept2)Guided a group to develop fatigue element models of airframe considering it as a multi-layer discretely connected multiple load path structure. Using this model we were able to establish excellent correlation with full scale test on SARAS fuselage as well as wing3)Developed a concept to show compliance to the fatigue and damage tolerance requirements of a metallic transport aircraft according to FAR25Currently: Chairman, BAIL,Offering a course on airframe design:1.Wing design2.Fuselage design3.Joint Design4.F&DT design of transport aircraftSpecialties: Airframe design, Airframe structural Analysis, Fatigue and Damage Tolerance design of airframe, Full Scale Fatigue Testing (FSFT), Full Scale Static Testing, Design and Design of test rigs for airframe testing.