Technical Library | 2024-08-29 18:30:46.0
The mechanical experience of consumption (i.e., feel, softness, and texture) of many foods is intrinsic to their enjoyable consumption, one example being the habit of twisting a sandwich cookie to reveal the cream. Scientifically, sandwich cookies present a paradigmatic model of parallel plate rheometry in which a fluid sample, the cream, is held between two parallel plates, the wafers. When the wafers are counterrotated, the cream deforms, flows, and ultimately fractures, leading to separation of the cookie into two pieces. We introduce Oreology (/Oriːˈɒl@dʒi/), from the Nabisco Oreo for "cookie" and the Greek rheo logia for "flow study," as the study of the flow and fracture of sandwich cookies. Using a laboratory rheometer, we measure failure mechanics of the eponymous Oreo's "creme" and probe the influence of rotation rate, amount of creme, and flavor on the stress–strain curve and postmortem creme distribution. The results typically show adhesive failure, in which nearly all (95%) creme remains on one wafer after failure, and we ascribe this to the production process, as we confirm that the creme-heavy side is uniformly oriented within most of the boxes of Oreos. However, cookies in boxes stored under potentially adverse conditions (higher temperature and humidity) show cohesive failure resulting in the creme dividing between wafer halves after failure. Failure mechanics further classify the creme texture as "mushy." Finally, we introduce and validate the design of an open-source, three-dimensionally printed Oreometer powered by rubber bands and coins for encouraging higher precision home studies to contribute new discoveries to this incipient field of study
Parts & Supplies | Pick and Place/Feeders
00141099 Siemens feeder 3x8mm Gold FEEDER Specification Part Numbre 2x8mm FEEDER 00141096 3x8mm Gold FEEDER 00141099 3x8mm Silver FEEDER 00141098 3x8mm SL FEEDER 00141088 12/16MM FEEDER 00141092 24/3
Parts & Supplies | Pick and Place/Feeders
SMT Siemens feeder 3x8mm Gold FEEDER 00141099 used in smt machine Specification Part Numbre 2x8mm FEEDER 00141096 3x8mm Gold FEEDER 00141099 3x8mm Silver FEEDER 00141098 3x8mm SL FEEDER 00141088 12/16MM FEEDER 00141092 24/32MM FEEDER 00141093
Parts & Supplies | Pick and Place/Feeders
SMT Siemens feeder 3x8mm Gold FEEDER 00141099 used in smt machine Specification Part Numbre 2x8mm FEEDER 00141096 3x8mm Gold FEEDER 00141099 3x8mm Silver FEEDER 00141098 3x8mm SL FEEDER 00141088 12/16MM FEEDER 00141092 24/32MM FEEDER 00141093
Technical Library | 2023-09-16 07:16:54.0
JUKI is a leading manufacturer of SMT pick and place machines, and their products are known for their high quality, precision, and reliability. In this article, we will discuss the benefits of using JUKI PCB SMT pick and place machines, including: High accuracy and precision Fast production speeds Flexible capabilities Reliable performance
Training Courses | | | PCB Rework and Hand Soldering Courses
The PCB rework and hand soldering courses courses cover techniques of rework and repair of PCBs, BGAs and other electronics assemblies, and teach fundamentals of soldering of electronics assemblies.
Industry News | 2018-10-18 09:06:41.0
Gold Fingers: A Guide to Understanding Gold-Plated PCB Connectors
Industry News | 2011-02-24 20:35:03.0
The SMTA is pleased to announce the program for the 2011 International Conference on Soldering and Reliability being held May 3-6 in Toronto, Ontario, Canada.
Industry News | 2013-09-25 16:06:25.0
On September 23, 2013, the National Development and Reform Commission (NDRC) of China issued a circular postponing the implementation of the regulation that would have eliminated cyanide-gold plating at the end of 2014.
Events Calendar | Wed Apr 20 00:00:00 EDT 2022 - Wed Apr 20 00:00:00 EDT 2022 | ,
Virtual Course: Selection Criteria of Surface Finish for Next Generation PCB Technologies
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