Recently, ISO of international Organization for Standardization promulgated ISO 23930:2 formally023 " fiber enhances —— of plastic composite material to draw crowded profile completely sectional compress experiment method " (English name: Fibre-reinforced Plastic Composites—Full-section Compressive Test For Pultruded Profiles) , this ministerial standard fastens Feng Peng to teach motion by Tsinghua university civil engineering and hold the position of project controller (Project Leader) , it is domain of composite material technology first by our country draft resolution and the international standard project of dominant formulate.
Composite material draws crowded profile (abbreviation “FRP pulls crowded profile ” ) , it is important high-end equipment and material of strategic safeguard foundation, construction of the sources of energy of wide application Yuxin, infrastructure, traffic is carried, the industry such as health of chemical environmental protection, sports, have light qualitative, excel in, anti-corrosive wait for an advantage, it is a structure light quantified first selection material, also be to enlist in army extremely the crucial material that cannot replace in the environment. Our country is FRP helps crowded profile production, exit and use big country, according to statistic of association of industry of Chinese composite material, our country composite material pulled crowded product output to exceed 1.6 million tons 2021, hold global total output about 60% ; Nearly two years, in new energy industry drive, FRP pulls crowded profile to produce can come true to break up two years continuously time.
Draw crowded craft sketch map
FRP pulls crowded profile to have the feature of anisotropy and heterogeneity, fiber and colophony are in sectional distributing mediumly and inhomogenous, add the effect of the initiative blemish such as small hole, small break, can make sectional in the difference of mechanical performance presence of each share data, be in corner and place of angle of cut especially, border intensity is actually far under panel intensity. Accordingly, it is very difficult to have the material sex that is based on local sampling to check a result accurate report the carrying capacity with its sectional whole. Be aimed at this problem, group of Tsinghua university Professor Feng Peng is based on old research to accumulate carry out experience with the project, put forward completely sectional compress experiment method, through short test specimen press press of completely sectional axes bears the weight of experiment, what obtain below mode is use in reasonable destruction to bear the weight of the full physical power that force evaluates FRP to draw crowded profile learns function, wove 2015 GB/T 31539—2015 " the structure enhances composite material to draw crowded profile with fiber " national level, used “ first among them completely sectional compress experiment ” the integral performance that this achieves a method to evaluate FRP to draw crowded profile formerly, made up for traditional and local sampling to cannot reflect the technical flaw of product whole function.
Completely sectional the test facilities sketch map that reduces a test
Fiber of classics whole nation enhanced committee of plastic standardization technology in September 2018 (SAC/TC39) offer, study by fibre glass of Nanjing of unit of ISO/TC61/SC13 home speak or sing alternately the designing institute applies for approval federation of Chinese housing materials and national standardization manage committee to agree, tsinghua university to international Organization for Standardization / enhance fiber and committee of composite material technology (ISO/TC61/SC13) offer application formally: The proposal will be completely sectional the standard experiment method that compresses an experiment to pull force of crowded profile whole to learn function as evaluation FRP gives project approving. Be based on strong research data and active communication to publicize, this draft resolution won the support that the country such as Germany, France, Italy, Switzerland, Czech, Korea, Japan, India represents, voting make standard ISO 23930 through taking the lead by China " fiber enhances —— of plastic composite material to draw crowded profile completely sectional compress experiment method " . After this, delegate of our country expert organizes each country person of the same trade to undertake test and verify, discuss through many rounds revise, last a period of time 4 years, achieved the authorized strength of this standard, released formally in Feburary 2023.