Hyundai Motor Company

Kia Motors Corporation

University of Michigan

Kia Corporation

Korea Advanced Institute of Science and Technology

Industry-academic Cooperation Foundation, Dankook University

Yong Joo Cho

Stephen R Forrest

Jun Yeob Lee

Yong Ho Kim

Ki Ho Hwang

Jae Han Chung

Jeong Hyun Ham

Jung Ryul Lee

Xiaoran Tong

An inspection apparatus inspects a pressure vessel using laser ultrasound. The apparatus includes an oscillation device that oscillates an excitation laser for exciting the pressure vessel and a conduit to guide the excitation laser oscillated from the oscillation device to inside the pressure vessel. The conduit is inserted into the pressure vessel with one conduit end located inside the pressure vessel and an opposite end located outside the pressure vessel. The apparatus includes a reflector at one conduit end inside the pressure vessel to reflect the excitation laser guided by the conduit and a detector that detects ultrasonic waves generated in the pressure vessel by the excitation laser reflected by the reflector by oscillating a receiving laser from outside of the pressure vessel. At least the conduit, reflector, or detector moves to correct an optical path of the excitation laser or the receiving laser.

Inspection apparatus for a pressure vessel

The present disclosure provides a thermal-activated pressure relief device of a fuel cell vehicle, the thermal-activated pressure relief device including: a hollow body mounted at an outlet of a hydrogen tank; a hydrogen discharge block having a plurality of first hydrogen discharge holes and mounted and fixed in an upper portion of the hollow body; a hydrogen discharge pipe having a plurality of second hydrogen discharge holes and connected to a bottom of the hydrogen discharge block; a piston fitted on an outer side of the hydrogen discharge pipe to be able to move up and down and to open and close the second hydrogen discharge holes; a stopper mounted in a lower portion of the hollow body and limiting a downward movement distance of the piston; and a melting alloy disposed between the piston and the stopper and melting at a predetermined temperature or more.

Thermal-activated pressure relief device for fuel cell vehicle

A pillar display system for a blind spot of a vehicle may include an A-pillar disposed inside a vehicle; and an image projector projecting a blind spot image of the vehicle taken with a camera, wherein a plurality of virtual ellipsoids are formed by setting an area where a driver's eyes are positioned and the image projector as focuses, and a pattern area formed by a combination of facets of the virtual ellipsoids is disposed at a position where the virtual ellipsoids and the A-pillar meet each other wherein the image from the image projector is displayed on the pattern area.

Pillar display system for blind spot of a vehicle

Disclosed herein are processes for fabricating organic photosensitive optoelectronic devices with a vertical compositionally graded organic active layer. The processes use either a single-stamp or double-stamp printing technique to transfer the vertical compositionally graded organic active layer from a starting substrate to a device layer.

Photovoltaic cells with a graded active region achieved using stamp transfer printing

There is disclosed a method for preparing the surface of a metal substrate. The present disclosure also relates to an organic photovoltaic device including a metal substrate made by such method. Also disclosed herein is an inverted photosensitive device including a stainless steel foil reflective electrode, an organic donor-acceptor heterojunction over the reflective electrode, and a transparent electrode over the donor-acceptor heterojunction.

Inverted organic photosensitive device

Growing community of inventors

Seoul, South Korea

Yong Joo Cho