Abstract: A metal beam with asymmetric section and damage warning function includes a main body; the cross-sectional shape of the main body section defines a neutral axis, and a pressure zone and a tension zone when subjected to a pure bending moment load. Each point of the main body is arranged in a linear relationship with respect to the neutral axis within the elastic range. The cross-sectional shape of the main body section is on both sides of the neutral axis in an asymmetrical arrangement. The section modulus of the pressure zone of the main body section at the maximum bending moment is greater than the section modulus of the tension zone.

Abstract: An apparatus for wave energy harnessing includes at least one slide shaft, a buoyant unit, an energy-transmitting unit, and a rotate unit. The slide shaft is firmly mounted on the seabed. The buoyant unit is movably engaged with the slide shaft and has a reservoir and an adjusting board, so as to control the vertical position of the buoyant unit relative to sea level. The energy-transmitting unit is mounted on the buoyant unit. The rotate unit rotatably engages with the energy-transmitting unit and connects with an energy-transfonning unit through a transmission shaft. Thereby, the buoyant unit is driven by waves to vertically slide along the slide shaft, the energy-transmitting unit rotates the transmission shaft of the rotate unit, and, thus, the energy-transforming unit generates power.

Abstract: An apparatus for wave energy harnessing includes at least one slide shaft, a buoyant unit, an energy-transmitting unit, and a rotate unit. Said at least one slide shaft is firmly mounted on seabed. The buoyant unit is movably engaged with the slide shaft and has a reservoir and an adjusting board, so as to control the vertical position of the buoyant unit relative to sea level. The energy-transmitting unit is mounted on the buoyant unit. And the rotate unit rotatably engages with the energy-transmitting unit and connects with an energy-transforming unit through a transmission shaft. Thereby, the buoyant unit is driven by wave to vertically slide along the at least one slide shaft, the energy-transmitting unit rotates the transmission shaft of the rotate unit and thus the energy-transforming unit generates power.