Philosophy of testing

It will be clear from the above that the range of possible tests is very wide, and in any discussion of the philosophy of testing it is useful to classify groups of tests in some manner. 

Several approaches are possible, for example, mechanical tests or electrical tests, or again, tests on flexible or on rigid materials, but in discus.sing the philosophy of testing a broader classification is needed. A useful approach is that given by Brown (ij in an earlier volume, namely. 

Philosophy of Quality Systems and Testing of Electrical Machines... 

Philosophy of quality systems and testing of electrical machines 11/247... 

Some users/consultants, however, are of the opinion that by this method the other phases are not subjected to the same severity. Accordingly, they prefer to consider the phase that is subjected to the least fault current as the base. Accordingly, the test duration should be adjusted for this phase. In the above case, the minimum severity has occurred in phase R, with only 39.6 kA. According to this philosophy the test duration should be enhanced to... 

Philosophy of quality systems Testing of electrical machines Procedure for testing Load test No-load test Tolerances in test results Certification of motors used in hazardous locations... 

Philosophy of quality systems Recommended tests Procedure for type tests Procedure for routine tests Procedure for field tests An introduction to earthquake engineering and testing methods... 

Bridgman had strong views on the importance of empirical research, influenced as little as possible by theory, and this helped him test the influence of numerous variables that lesser mortals failed to heed. He kept clear of quantum mechanics and dislocation theory, for instance. He became deeply ensconced in the philosophy of physics research for instance, he published a famous book on dimensional analysis, and another on the logic of modern physics . When he sought to extrapolate his ideas into the domain of social science, he found himself embroiled in harsh disputes this has happened to a number of eminent scientists, for instance, J.D. Bernal. Walter s book goes into this aspect of Bridgman s life in detail. 

A convenient size for a circular coupon is 3 8 cm dia., a thickness of 0 - 32 cm and a central hole of 1 1 cm. Although inherent in the philosophy of corrosion testing, the use of coupons with surfaces that simulate those in service has been found to be unsatisfactory owing to irreproducibility, and the standard procedure normally adopted is to abrade down to 120-grit. ASTM Method G4 1984 gives details of preparation of specimens, evaluation of replicate exposures and the application of statistical methods. 

Toxicity. There is only one Member State (Germany) having a test which is used to assess toxic hazards of combustion gases. The test is used mainly to evaluate non-combustible materials and is based on bio-assay techniques. The philosophies of other countries consider non-combustible materials as presenting no, or negligible toxic hazard. 

This illustrates the general philosophy of taxometrics. For something to be deemed a taxon, it needs to clear several hurdles, which arguably makes taxometrics the most rigorous analytic approach to the study of taxonomy. The last two conditions (e and f) are external consistency tests and apply to all taxometric studies. On the other hand, a, b, c, and d are internal consistency tests. Some of them are specific to MAXCOV—other procedures have their own unique internal consistency tests—but a and b can be performed with any of the CCK methods. We will now consider the first three internal consistency tests (a, b, and c) in detail and postpone discussion of the distribution of taxon membership. 

---