Reliability analysis of allowable stress of rupture strength was carried out according to Z-parameter method In comparison with allowable stress designed by minimum rupture strength method of SH/T 3037—2002,the results show that the distribution of Z-parameter was supported by normal distribution.

Fracture strengths of domestic ceramic orthodontic brackets during mesial-distal archwire tipping;

Fracture strength of domestic ceramic orthodontic brackets during archwire torsion;

Force controlling method for measuring fracture strength and toughness of diamond film;

Influence of polypropylene tow fiber on hardness, weight, circumference, sucking resistant index of filter stick and finished filter stick rate was discussed under different breaking tenacity and breaking elongation.

Preliminary experimental results have given the effect of pretreatment process on the rupture strength of the micro-drills and diamond coating deposition on cemented carbide micro-drills with a diameter of 0.

Effects on yield strength and elongation ratio, rupture strength and elongation ratio and tearing strength were studied.

Improvement in breaking strength of nylon66 industrial yarn;

Uncertainty of expression and evaluation of measureing single yarn breaking strength;

Using the binary system solution which is made up of CaCl_2,water,ethyl alcohol(1:8:2 mole ra- tion),to treat fine spinning woolen fabric for its wrinkle-resistant finishing,and under the condition of three kinds of processing temperatures (50℃,60℃,70℃) and two kinds of time (20min,40min),to test the an- gle of crease recovery and breaking strength of woolen fabric after the treatment.