Testing, reason for

to control the quality of an A S and a bonding process, to check that the technical characteristics of the A and S meet the figures indicated in the TDS and also meet the customer s requirements. 

to select an A S adapted to a given assembly, given materials to be bonded or sealed, given method of application and setting, and to all the requirements for bonded parts, 

to confirm the effectiveness of a bonding process such as surface preparation of substrates, application techniques, drying or curing conditions, durability and strength of the bond, 

to investigate parameters that may bring differences in performances of the bond or may lead to failure. 

QC analysis UV, IR spectra, chromatography, DSC, thermogravimetry Acid value, epoxy equivalent, hydroxyl value, isocyanate value 

---

Examining the feasibility of increasing the charging amounts or shortening turnaround times for batches might be the reason for testing. Both of these items can raise issues that potentially affect process safety. 

The question generally arises, Why test There are reasons for testing arising from both the manufacturers and the users points of view. Traditionally, manufacturers have carried out factory tests in order to avoid the costly expense involved with site rectification of deficiencies. Testing is expensive, and manufacturers have no incentive to test low value items except where consequential damage can be caused by the... 

The last reason for testing may take a considerable time to complete and can be complex. Mechanical testing to determine if the material met specifications or if it changed over time should be conducted where possible, measuring against the requirements of the original product specification. 

If we consider Ni as an active site for Ni-based materials, changing the environment in which the ion is immersed is expected to influence its electronic properties. This is in principle the reason for testing a series of alloys or intermetallic compounds of Ni. On the other hand, on changing the environment, bond lengths will also be modified and this will modify the actual concentration of active sites, in turn determining the active surface area. A few examples can better illustrate these concepts. 

A number of subjects common to all areas of physical testing have been addressed in chapter 2. These include discussion of the reasons for testing, the trends in test development, the use of statistics and quality control of laboratories. Whilst these matters are not unique to rubber testing, it is most important that they are fully appreciated in the context of our particular test procedures and class of materials. 

An important reason for testing selective leach procedures on sediments that are subjected... 

There are many reasons for testing water, including compliance testing, process quality control, safety and health. There is one definitive source of water testing methods and that is Standard Methods for the Examination of Water and Wastewater, a joint publication of the American Public Health Association, The American Water Works Association, and the Water Pollution Control Federation... 

The reason for testing is to gain information, thereby ascertaining the acceptability of the test piece in comparison with a specification. That specification should be drawn up so that if all results pass, the material is fit for the purpose that it is intended to fulfil. All tests must be relevant to the use of the material, and must be understood by all the parties involved. This need has led to a series of standard tests British BSI, ASTM, etc. 

Brown [I] has previously suggested that as well as these two reasons for testing, two others can be listed, namely tests to establish material properties for design data and tests to establish reasons for failure if a product proves to be unsatisfactory in service. 

Because of the different reasons for testing and the eon.sequent difference in test requirements. developments in test methods do not follow one path. The basic themes are constant enough people want more efficient tests in terms of time and money, better reproducibility, and tests more suited to design data and more relevant to service performance. However, the emphasis depends on the particular individual needs. 

Use bullet points to state three reasons for testing a new electrical installation. 

The end user s reasons for testing plastics are essentially twofold. The primary reason is to verify the quality of the incoming material to assure that it is within the specifications. The second reason is to validate the part design, which may involve testing the resin as well as the final part. 

The process of analyzing tissue or a body fluid depends on the type of tissue or fluid being examined and the reason for testing it. Usually a sample is taken in a clinical setting and prepared for dehvery to a laboratory. For example, if the sample is hlood, it may be drawn at a clinic, then placed in special tubes with a substance that keeps the blood from clotting. 

Adhesive tests are performed for a number of reasons. Perhaps the most common reasons for testing adhesives are ... 

If reasonable suspicion exists that an employee is under the influence of drugs or alcohol. Reasonable suspicion is based on direct observations and/or physical evidence of activities. Hearsay evidence is not a vahd reason for testing. 

---