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AR MS&T, the annual materials science conference held by four technical societies, offers an unreplicated technical program addressing structure, properties, processing and performance across the materials community. The exposition showcases a wide variety of equipment and services to the automotive, aerospace, instrumentation, medical, oilfield and energy industries. Learn more about each society here.
Monthly Archives: August 2016
Visit Nanovea At MS&T In Salt Lake City
Controlled Humidity Nanoindentation of Polymer Films
The mechanical properties of polymer is modified as the environmental humidity elevates. Transient moisture effects, a.k.a. mechano-sorptive effects arises as the polymer absorbs high moisture content and experiences accelerated creep behavior. The higher creep compliance is a result of complex combined effects such as increased molecular mobility, sorption-induced physical aging and sorption-induced stress gradients.
Therefore, a reliable and quantitative test (Humidity Nanoindentation)of the sorption-induced influence on the mechanical behavior of polymeric materials at different moisture level is in need. The Nano module of the Nanovea Mechanical Tester applies the load by a high-precision piezo and directly measures the evolution of force and displacement. Uniform humidity is created surrounding the indentation tip and the sample surface by an isolation enclosure, which ensures measurement accuracy and minimizes the influence of drift caused by humidity gradient.
Humidity Effect On Paper Flatness
Paper flatness is critical to the proper performance of printing paper. It communicates functional characteristics and makes an impression of the paper quality. A better understanding of the effect of humidity on paper flatness, texture and consistency allows optimizing the processing and control measures to obtain the best product. Quantifiable, precise and reliable surface inspection of the paper in different humid environments is in need to simulate the use of paper in the realistic application. The Nanovea 3D Non-Contact Profilometers utilizes chromatic confocal technology with unique capability to precisely measure the paper surface. A humidity controller provides precise control of the humidity in a sealed chamber where the test sample is exposed to the moisture.
Humidity Tribology Effect On DLC Coating
The DLC coating exhibits very low COF against steel ball (below 0.1) under high vacuum and dry condition. However, it has also been reported that the DLC is very sensitive to the change of environmental conditions, particularly the relative humidity tribology(RH). The environment with a high humidity and oxygen concentration may lead to significant increase of the COF. In order to simulate the realistic environmental conditions of the DLC coating for tribological applications, reliable wear evaluation in a controlled and monitored humidity is in need. It allows users to properly compare the wear behaviors of the DLC coatings exposed to different humidity and to select the best candidate for the targeted application.
