Materials testing package for batteries and energy conversion systems
Abstract A novel testing technique is described in which the material is subjected to fast heating. An aggressive medium or special environment may be used to contact the material under test, while extreme conditions evaluate materials. Such testing programs are safe and reliable. A research and development package is commercially available which permits the simultaneous assessment of various materials by a multi-electrode tester using continuous or pulsed electroheating in the media of interest. The signals in mV (or mΩ) are measured manually or by a microprocessor at various stages of the test. The amplitude and frequency of the reversed polarity is controlled by a “Reversalyzer” power supply which is utilized in the package to generate various d.c. pulses.
Adopting literature study,analysis and investigation,this article attempts to find out problems and flaws in item establishment,monitoring index and standard for evaluation in Trial Program of Standards for Students Physical Constitution and Health. Suggestions and thoughts to improving this program are made. It is proposed that there should be more tests on health indexes. Cardiovascular and endurance tests should be changed and the monitoring items in rural schools ought to be 12?min run etc.