Abstract: A roaming sensor system collects data on the condition of roads and bridge decks and identifies and maps defects, including cracks, potholes, debonding, tracking, delamination, surface ice, surface water, and rebar corrosion. Data are collected by a vehicle or a fleet of vehicles driven at normal traffic speeds. The vehicle is outfitted with sensors that collect data using acoustic surface waves, ground penetrating radar, mm wave surface radar, and/or video images. The data are transmitted to a control center for analysis and distribution.

Abstract: A roaming sensor system collects data on the condition of roads and bridge decks and identifies and maps defects, including cracks, potholes, debonding, tracking, delamination, surface ice, surface water, and rebar corrosion. Data are collected by a vehicle or a fleet of vehicles driven at normal traffic speeds. The vehicle is outfitted with sensors that collect data using acoustic surface waves, ground penetrating radar, mm wave surface radar, and/or video images. The data are transmitted to a control center for analysis and distribution.

Abstract: A resin-and-fiber includes a base layer and a molded layer integrally bonding the base layer. The base layer includes a fiber layer made of fiber woven fabric and a resin layer made of transparent or translucent resin. The fiber layer has a first surface and an opposite second surface. The resin layer bonds the first surface and penetrating into the fiber layer. The molded layer is made of resin and integrally bonding the second surface of the fiber layer. A method for making the present resin-and-fiber composite is also provided.

Abstract: A roaming sensor system collects data on the condition of roads and bridge decks and identifies and maps defects, including cracks, potholes, debonding, tracking, delamination, surface ice, surface water, and rebar corrosion. Data are collected by a vehicle or a fleet of vehicles driven at normal traffic speeds. The vehicle is outfitted with sensors that collect data using acoustic surface waves, ground penetrating radar, mm wave surface radar, and/or video images. The data are transmitted to a control center for analysis and distribution.

Abstract: The stylus retaining and releasing mechanism includes a housing, a push button and an eject piece. The housing includes a first sidewall, a second sidewall connecting with the first sidewall and a stylus assembling portion disposed on the second sidewall. The first sidewall defines an assembling hole therethrough configured for inserting or removing the stylus. The second sidewall defines a button hole therethrough. The stylus assembling portion defines an axial receiving hole therethrough communicating and being coaxial with the assembling hole to receive the stylus therein. The push button is elastically assembled to the button hole of the second sidewall to releasably lock the stylus. The eject piece fixed to the second sidewall and configured to provide a elastic pushing force to eject the stylus out as the push button is pressed.

Abstract: The stylus retaining and releasing mechanism includes a housing, a push button and an eject piece. The housing includes a first sidewall, a second sidewall connecting with the first sidewall and a stylus assembling portion disposed on the second sidewall. The first sidewall defines an assembling hole therethrough configured for inserting or removing the stylus. The second sidewall defines a button hole therethrough. The stylus assembling portion defines an axial receiving hole therethrough communicating and being coaxial with the assembling hole to receive the stylus therein. The push button is elastically assembled to the button hole of the second sidewall to releasably lock the stylus. The eject piece fixed to the second sidewall and configured to provide a elastic pushing force to eject the stylus out as the push button is pressed.