Synthetic materials

implement all of their ideas into one tent; this approach is very different than ours where we only had two animals. They somehow were able to put all of their ideas into one application. I also thought it was very smart to focus on phase change materials for DP3. I also fill like because of their numerus animals they were able to pick the perfect properties for what they want, while we did some research but not as extensive, so it is possible that we missed the best animal to our application. I…

Xu Lanying et al. discussed the conductive heating method applied to small hole drilling[16-18], Heating cutting is a green cutting technology. Material is being heated to appear softening phenomenon, so the material hardness decreases or material yield strength decreases, then its flow stress decreases, which reduces the shear resistance of the material, thereby the cutting process will become smooth, it can obtain the perfect surface roughness which is equivalent to the grinding, and no…

replacing bone and mimicking their structure for, various applications. When looking at biological materials, to determine their effectiveness as a scaffold or sufficient structure for various other uses, often they are tested for their resistance to fracture. This is referred to as fracture propagation. Bamboo Bamboo is well known for its sufficient mechanical properties, and great flexibility. It also has great fracture toughness. Bamboo is considered to be a bio composite, meaning it…

(Abiola). Before the tests, samples are cut into piece from the core with thickness about 1 in, and polished to make the top and bottom surfaces parallel. All tests are proceed on Nanovea Indenter perpendicular to the bedding direction. As natural material, the shale rock samples are not homogenous, so for each sample, at least 12 tests are done on the sample and averaged to get a result to be statistically correct. The indentation points are chosen carefully using the microscope before each…

don’t have as many reliable testing methods as other materials, such as metals. This makes it difficult to do proper safety checks on composite airplane components. Damage of composites is also not observable by the naked eye and is easily missed. In order to actually determine if a composite’s structure has been compromised, further testing and equipment is required, which makes the whole situation easy to overlook or ignore. Human error and material selection are two other areas that pose…

Determination of the gel-point of a resin via DMA testing and its use in a practical sense The DMA is used to determine the modulus values of the resin to associated temperatures and frequencies. The state of viscosity of the resin is also monitored through the evaluation of tan delta values. Gel-point of a resin implies that resin matrix has transformed into an elastic gel state and can no longer flow. The viscosity shows a sudden rise to extremely high values. The time at which this state is…

In this model the ignition time of a particle in the explosive was equal to its distance to the ignition point divided by the detonation velocity. The *MAT_NULL material and *EOS_LINEAR_POLYNOMIAL equation of state in LS-DYNA were used to express the above constitutive relations. The interface of Euler and Lagrange elements at the detonation model were coupled using Arbitrary Lagrangian-Eulerian (ALE) method [36…

Most tap water is more heavily tested and regulated than bottled water (Ellsbury 10, 2012). So why do we prefer it more than, just about free, tap water in our homes? Bottled water is expensive and uses more water to make than what is inside of it. It also uses about seventeen million barrels of oil to manufacture water bottles every year. This is enough oil to fuel one million cars a year (Ellsbury 10, 2012). We, as a community, need to try to cut back on using disposable water bottles, or…

Experiment 37: Friction Anne Smolinski as910513@ohio.edu Wednesday 11:50-1:40 TA: Sanjoy Sarkar November 11, 2017 Experiment 37: Technical Report ABSTRACT In experiment 37, the friction force is being explained and tested by using a block that is being pulled across a wooden base. Out of the four different types of friction, two will be tested during this experiment: (i) static and (ii) kinetic. Static friction can be defined as the force that resists motion of an object to a surface so…

attributing to the presence of ZIF-67 nanoparticles, acting as the crosslinkers, enhancing the interactions between the cellulosic molecular chains. The determination of mechanical properties under wet condition is of great significance to the paper-based materials. As shown in Fig. 3(C) and Table S3, the CP under wet condition had poor mechanical properties with tensile strength and elastic modulus of 0.15 and 22 MPa , respectively. In contrast, the CP/CNF showed favorable mechanical…