D
Dai Gil Lee
Researcher at KAIST
Publications - 321
Citations - 8595
Dai Gil Lee is an academic researcher from KAIST. The author has contributed to research in topics: Composite number & Epoxy. The author has an hindex of 44, co-authored 321 publications receiving 7620 citations. Previous affiliations of Dai Gil Lee include Samsung Heavy Industries & Chonbuk National University.
Papers
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Improvement of the fracture toughness of adhesively bonded stainless steel joints with aramid fibers at cryogenic temperatures
TL;DR: In this paper, a film-type epoxy adhesive was reinforced with randomly oriented aramid fiber mats to decrease the CTE (Coefficient of thermal expansion) of the adhesive and to improve the fracture toughness of adhesive joints composed of stainless steel adherends at the cryogenic temperature of −150°C.
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In situ cure monitoring of adhesively bonded joints by dielectrometry
TL;DR: In this paper, a dielectric method which measures the dissipation factor of the adhesive during the cure of joints and converts it into the degree of cure of the adhesives was devised.
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Prediction of crack length and crack growth rate of adhesive joints by a piezoelectric method
TL;DR: In this article, a prediction method for the fatigue crack length in the adhesive layer of tubular single-lap adhesive joints was developed by the piezoelectric method, and the relationship between the fatigue cracks length and the finite element analysis was conducted and verified by experiments.
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Development of a spherical bearing with uni-directional carbon/epoxy composite
Byung-Chul Kim,Dai Gil Lee +1 more
TL;DR: In this article, a uni-directional carbon/epoxy composite rather than carbon/phenolic fabric composites was used to increase the compressive strength by eliminating the interior fiber wrinkles.
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Cryogenic impact resistance of chopped fiber reinforced polyurethane foam
TL;DR: In this article, a drop weight impact test was conducted at a cryogenic temperature of −196°C using liquid nitrogen, and the applied maximum impact pressure, permanent strain and damage factor were measured to assess the damage caused by the impact test, from which the critical impact energy was investigated.