This dataset consists of tensile tests performed by directly gripping single UHMMPE fibers. The tests were conducted at 11 different temperatures, and at both quasi-static and dynamic loading rates. The testing procedures are described in NISTIR 8265.

This dataset contains mechanical testing data at two different loading rates for two different aging conditions (wet and dry at 70 °C) for five different extraction time points for ultra high molar mass polyethylene (UHMMPE) unidirectional (UD) laminate. In each folder there is a spreadsheet (.csv) with the test data collected during loading, and a (.avi) video file for each of the tests done under those conditions.

This dataset contains mechanical testing data at two different loading rates for two different aging conditions (wet and dry at 70 °C) for five different extraction time points for ultra high molar mass polyethylene (UHMMPE) unidirectional (UD) laminate. In each folder there is a spreadsheet (.csv) with the test data collected during loading, and a (.avi) video file for each of the tests done under those conditions.

Data associated with experiments to examine the effect of thermal aging on the molar mass of ultra-high molar mass polyethylene fibers.

Data associated with experiments to examine the effect of thermal aging on the molar mass of ultra-high molar mass polyethylene fibers.

Traditionally, soft body armor has been made from materials such as poly(p-phenylene terephthalamide) (PPTA) and ultra-high molar mass polyethylene (UHMMPE). However, to diversify the fiber choices in the United States body armor market, copolymer fibers based on the combination of 5-amino-2-(p-aminophenyl) benzimidazole (PBIA) and PPTA were introduced. Little is known regarding the long-term stability of PBIA fibers, but as condensation polymers, they have potential sensitivity to moisture and humidity. Ballistic resistance and other critical structural properties of these fibers are predicated on their superior mechanical properties. Therefore, it is important to characterize the strength of these materials and understand their vulnerability to environmental conditions to evaluate their use lifetime in safety applications. Three PBIA-based fibers were selected for the study. The fibers were thoroughly washed to remove an organic coating, which held the individual fibers in each yarn bundle together, allowing for the disentangling of single fibers for mechanical testing. Molecular spectroscopy and single fiber tensile testing were performed on the fibers to characterize changes in their chemical structure, tensile strength, and strain to failure as a function of exposure time to four different hydrothermal ageing conditions.

,Oznaczono ścieralność dla sześciu materiałów: tekstolit, polioksymetylen (POM), poliuretan (PU), poliamid (PA), teflon (PTFT), polietylen (PE). Odporność na ścieranie w wyniku oddziaływania mechanicznego na powierzchnię próbek testowych mierzono za pomocą obracającego się cylindrycznego urządzenia rolkowego, a procedura była zgodna z normami ISO 4649:2010 [5]. Odporność na ścieranie wyrażono jako względną utratę objętości (DVrel) próbki w porównaniu z arkuszem ściernym skalibrowanym przy użyciu standardowego wzorca, którym była standardowa guma z Federalnego Instytutu Badań i Testowania Materiałów (Berlin, Niemcy) (ISO 4649:2010, standardowy związek odniesienia nr 1). Cylindryczna próbka do badania elastomeru (średnica 16 ± 0,2 i wysokość 10 mm) została zamocowana tak, aby przesuwała się po arkuszu ściernym przy nacisku 10 N ± 0,2 N w odległości 40 m i obracała się podczas testu. Arkusz ścierny został przymocowany do powierzchni obracającego się walca walcowego, o który przytrzymywana była próbka badawcza i po której ją przesuwano. Oznaczenie ścieralności dla każdego materiału konstrukcyjnego wyznaczono na podstawie trzech niezależnych pomiarów.,

This report describes the test equipment, process, analysis, and data file formats for the Numisheet 2020 tensile and tension/compression testing of the four materials associated with the Numisheet 2020 conference benchmarks. The four materials include two steel alloys, DP980 for Benchmark 1 and DP1180 for Benchmark 2, and two 6000 series aluminum alloys, AA6xxx-T4 for Benchmark 1 and AA6xxx-T81 for Benchmark 2, that will be referred to here as BM1-DP980, BM2-DP1180, BM1-6xxx-T4, and BM2-6xxx-T81, respectively. The testing reported here was requested by the Numisheet 2020 Benchmark Committee and was performed by the NIST Center for Automotive Lightweighting (NCAL) at the National Institute of Standards and Technology in Gaithersburg, MD. The tests were performed at NCAL from October 2019 through January 2020.

This dataset is a supplement to the paper titled "Fiber Orientation Angle Effects in Machining of Unidirectional CFRP Laminated Composites" (https://doi.org/10.1016/j.jmapro.2014.06.001). High speed videography of eight cutting tests were performed to study how cutting angle effects cutting force and workpiece surface finish. A description of the experimental setup, as well as a discussion of results, are given in the paper. Files containing video, thermal, force, and synchronization data for the tests are available for downloading. Detailed description is provided in the document "CFRP_Machining_Data_Description.pdf".

This challenge is to predict the macroscopic stress-strain response of compression samples across a range of temperatures taken from the base leg of the IN625 AMB2018-01 build in both the build direction (Z-axis) and a transverse-build direction (Y-axis). The specific temperatures of interest are 298 K, 523 K, and 773 K. The calibration data provided in this dataset corresponds to the build direction compression tests done at 298 K and 773 K.