Wei Jin

TL;DR: In this article, a fiber optic extensometer based on a scanning white light Michelson interferometer is presented, which employs a light emitting diode as the light source and a single mode fiber with predetermined gauge length as the extensometers sensor head.

TL;DR: In this paper, a time-varying model for the flexural capacity of reinforced concrete (RC) beams in a chloride environment over a whole life cycle was presented, based on the time varying reinforcing steel material performance, the time changing bond performance, and standard structural member design theory.

TL;DR: A unified framework to tackle the above three challenges for automatic Web image annotation is proposed, which mainly involves two components: tag candidate retrieval and multi-facet annotation.

TL;DR: In this paper, the use of gas absorption lines as multi-wavelength references to enhance the measurement accuracy of fiber Bragg grating sensors was reported, with a 3-FBG-sensor array interrogated by a tunable laser.

TL;DR: In this paper, a near infrared distributed feedback diode laser at 1.53 μm was used for acetylene detection at atmospheric pressure and room temperature, achieving a noise-limited minimum detectable concentration (1σ) of 2 part-per-million (ppm) with a 7mW laser power and a 1s lock-in time constant, corresponding to a normalized noise equivalent absorption coefficient of 5.4×10 -8 cm -1 W/√Hz.