Abstract: The present disclosure relates to a method for measuring full-field strain of an ultra-high temperature (UHT) object based on a digital image correlation method. The temperature range is from normal temperature to 3500 degrees Celsius. The method includes the steps of selecting a proper high-temperature-resistant speckle material, tantalum carbide powder, according to the characteristics of the object to be measured. First, polishing a to-be-measured surface of a tungsten test piece to remove an oxide layer, then mixing the tantalum carbide (TaC) powder and absolute ethanol to form a paste according to a mass ratio of 1:2. Making randomly distributed speckles from the mixture on the to-be-measured surface of the test piece which has been processed. In order to improve firmness and stability of the newly made speckles, performing curing treatment to the speckles.

Abstract: The present disclosure relates to a method for measuring full-field strain of an ultra-high temperature (UHT) object based on a digital image correlation method. The temperature range is from normal temperature to 3500 degrees Celsius. The method includes the steps of selecting a proper high-temperature-resistant speckle material, tantalum carbide powder, according to the characteristics of the object to be measured. First, polishing a to-be-measured surface of a tungsten test piece to remove an oxide layer, then mixing the tantalum carbide (TaC) powder and absolute ethanol to form a paste according to a mass ratio of 1:2. Making randomly distributed speckles from the mixture on the to-be-measured surface of the test piece which has been processed. In order to improve firmness and stability of the newly made speckles, performing curing treatment to the speckles.

Abstract: A fuel cell cathode catalyst layer structure for enhancing the durability of a catalyst is provided. The cathode catalyst layer structure includes a first catalyst portion, a second catalyst portion, and a third catalyst portion that are arranged in sequence from an area close to a diffusion layer to an area close to a proton exchange membrane (PEM); a pure platinum catalyst is placed inside the first catalyst portion, the second catalyst portion, and the third catalyst portion; platinum loads of the pure platinum catalysts inside the first catalyst portion, the second catalyst portion, and the third catalyst portion decrease progressively; and average particle sizes of pure platinum catalyst particles inside the first catalyst portion, the second catalyst portion, and the third catalyst portion increase progressively. The pure platinum catalyst with a large or small particle size is more resistant to corrosion, and improves the initial performance of fuel cell.

Abstract: A HDMI connector includes a metallic housing having two plates respectively extending downward from two opposite sides thereof, an insulated body mounted in the metallic housing, and a plurality of electrically conducting pins installed with the insulated body. The metallic housing has two legs each located in front of a respective one of the plates, each leg being integrally formed by cutting a portion of the metallic housing and bending the portion downward. Each leg has a base portion and a solder portion extending from the base portion to be electrically connected to a printed circuit board, wherein the base portion is formed substantially at a right angle with respect to the solder portion and has a dimension greater than the solder portion. The HDMI connector can save material in manufacturing and increase space availability.

Abstract: A HDMI connector includes a metallic housing having two plates respectively extending downward from two opposite sides thereof, an insulated body mounted in the metallic housing, and a plurality of electrically conducting pins installed with the insulated body. The metallic housing has two legs each located in front of a respective one of the plates, each leg being integrally formed by cutting a portion of the metallic housing and bending the portion downward. Each leg has a base portion and a solder portion extending from the base portion to be electrically connected to a printed circuit board. The HDMI connector can save material in manufacturing and increase space availability.