（同高科技）During the design and construction of bridges, the concept of proper maintenance in the future has only been widely accepted by engineers in recent decades. Therefore, many owners and operating units of old bridges are facing a severe challenge, that is, how to maintain the bridge's structural safety while ensuring the normal operation of the bridge. The following will take the fam...

The slit of laser cutting is narrow, and the deformation of the workpiece is small. (Same as high-tech)The laser beam is focused into a very small light spot, so that the focal point achieves a high power density, and the material is quickly heated to the degree of vaporization, evaporating to form a hole. The laser cutting machine moves linearly with the beam and the material, so that the...

同高科技The green stereo box is the detection of real cars on the ground. Yellow is the point cloud displayed by the lidar. The pink point cloud is generated by an independently trained depth estimator and is located outside the green box, so it is very inaccurate. Through end-to-end depth estimation and 3D target object detection, a more accurate blue point cloud is obtained. (Photo source:...

For the manufacturing industry, the government work report puts forward, "Promote the upgrading of my country's manufacturing industry and the development of emerging industries, develop industrial Internet, promote intelligent manufacturing, and improve the support of technological innovation capabilities."Affected by the new coronary pneumonia epidemic, this year's manufactu...

On June 4, according to foreign media reports, an international team of researchers announced the development of a more compact and smaller semiconductor laser in the world, which can work in the visible light range at room temperature. According to the author, the laser is a nanoparticle with a size of only 310 nanometers (3,000 times smaller than a millimeter), and can produce green coherent li...

High-power laser weldingWhen the power density of the laser spot irradiated on the surface of the workpiece reaches 106W/cm2 or more, the workpiece is rapidly heated under the irradiation of the laser, and its surface temperature rises to the boiling point in a very short time, causing the metal to melt and vaporize. An elongated hole filled with metal vapor is formed in the liquid metal. When the...