Info!
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
UPDATED 1 Sept: The EI library in London is temporarily closed to the public, as a precautionary measure in light of the ongoing COVID-19 situation. The Knowledge Service will still be answering email queries via email , or via live chats during working hours (09:15-17:00 GMT). Our e-library is always open for members here: eLibrary , for full-text access to over 200 e-books and millions of articles. Thank you for your patience.
Yield behaviour of ASTM mobility test greases. P. Whittingstall. NLGI Spokesm, March 1999, 63(1), 21--27.
Controlled stress rheometry is used to quantify grease flow and yield properties at various temperatures. The technique is applied to three grease samples used in a Round Robin investigation to study the ASTM D 1092 test for grease pumpability at sub-ambient temperatures. Features of the rheometer are described and illustrated. One grease has undesirable low temperature properties. Another is relatively insensitive to temperature as far as viscosity is concerned but the yield stress diminishes significantly. The best results are obtained in dynamic testing using a stress sweep at a given temperature, or by sweeping the temperature itself. 4 refs.
Abstract details
Journal title: NLGI Spokesman
Subjects: Health and safety, Measurement, testing and control, Fuel quality and control, Lubricants
