Internally generated engineering data

Data for methane/hydrocarbon mixtures are not well established. Some results can be generated through commercially available simulators like Aspen or Hysys but are somewhat questionable because of the nonidealities of these mixtures at elevated pressures. Also, the vapor-liquid equilibrium data currently available are very limited and mostly concern blends of methane with n-paraffins, which have very poor ignition characteristics in internal combustion engines. 

Nelson D., and S. Muthukrishnan. 2001. Design issues in multimedia messaging for next generation wireless systems. Pp. 98-103 in Proceedings of the ACM International Workshop on Data Engineering for Wireless and Mobile Access (Mobide). New York Association for Computing Machinery. 

A creep test is in essence very simple - a constant force is applied to the rubber and the change in deformation with time monitored - but detailed procedures were not standardised internationally until 1988 and there is still no general ASTM method. This reflects the relatively small amount of creep testing carried out on rubbers, which in turn is due to the relatively few rubber products where creep is a problem. This is in contrast to the situation with thermoplastics where creep performance is a prime engineering factor. However, for particular applications of rubber where creep is important, for example bridge bearings, a considerable amount of data has been generated. 

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