China
Africa
Explore chapters and articles related to this topic
Textile Reinforcement Modification and Matrix Materialization
Published in Magdi El Messiry, Natural Fiber Textile Composite Engineering, 2017
Elastomer matrix may be used, like natural rubber or manmade rubber, in manufacturing of NFPC. This will combine the strength of the fibers and the impact properties of the rubber. It was found that rigid elastomer composite specimens had high impact resistance [71]. For sisal fiber reinforced rubber composite, reinforcement with short fibers offers some attractive features, such as high modulus and tear strength. Major factors which affect the performance of rubber-fiber composites are fiber loading, fiber dispersion, fiber orientation, fiber to matrix adhesion and the aspect ratio of the fiber [72]. Short fiber reinforced rubber composites were developed to fill the gap between the long fiber reinforced and particulate filled rubber composites. Composites in which the short fibers are oriented uniaxial in an elastomer have a good combination of good strength and stiffness from the fibers and elasticity from the rubber. These composites are being used for the fabrication of a wide variety of products such as v-belts, hoses and articles with complex shapes. Design flexibility is another advantage of these composites. Mechanical properties, like specific strength and stiffness, reduced shrinkage in molded products, resistance to solvent swelling, abrasion, tear and creep resistance are greatly improved in short fiber composites [73].
Fiber-Reinforced Elastomers
Published in Anil K. Bhowmick, Current Topics in ELASTOMERS RESEARCH, 2008
Though short fiber-reinforced rubber composites find application in hose, belt, tires, and automotives [57,98,133,164] recent attention has been focused on the suitability of such composites in high-performance applications. One of the most important recent applications of short fiber–rubber composite is as thermal insulators where the material will protect the metallic casing by undergoing a process called ablation, which is described in a broad sense as the sacrificial removal of material to protect structures subjected to high rates of heat transfer [190]. Fiber-reinforced polymer composites are potential ablative materials because of their high specific heat, low thermal conductivity, and ability of the fiber to retain the char formed during ablation [191–194].
Adhesion Between Components of Elastomeric Composite Materials
Published in Nicholas P. Cheremisinoff, Elastomer Technology Handbook, 2020
Fibers are key components in making the skeleton of fiber-reinforced rubber products, such as tires, belts, and hoses; they provide strength to the products, increase their life, and give dimensional stability to rubber components. The fibers usually are used in the form of twisted fine filaments to form a cord and then woven to form fabrics. Once, cotton and rayon were used as reinforcing fibers, but now, nylon, polyester, glass, steel, and so on, are used as reinforcing members because of their better resistance under severe environments.
Experimental identification of the fractional parameter of the fractional derivative standard linear solid model for fiber-reinforced rubber concrete
Published in Mechanics of Advanced Materials and Structures, 2023
Ivan I. Popov, Marina V. Shitikova, Artem V. Levchenko, Alexey D. Zhukov
This study presents the effective procedure for experimental identification of the parameters for the standard linear solid model with fractional derivatives for rubber concrete and fiber-reinforced rubber concrete. The internal friction and fractional parameter in polymer concretes, namely, low molecular weight cis-polybutadiene rubber (grade SKDN-N)–based concrete and low molecular weight polybutadiene rubber (BR) of mixed microstructure–based concrete have been investigated. According to the obtained results the following conclusions could be made:due to the destruction of molecular bonds in materials caused by their oxidation, the internal friction in polymer concretes and fiber-reinforced concretes increases with time, whereas the fractional parameter decreases. This decrease in the fractional parameter between 7 and 182 days varies from one batch to another and reaches the value of 12.9%. After 90 days this process substantially slows down;BR-based concrete and fiber-reinforced concrete show higher values of the internal friction and fractional parameter, i.e. behave more viscoelastically, rather than SKDN-N-based ones;the introduction of steel fiber in the material reduces the internal friction and fractional parameter, whereas propylene fiber produces the opposite effect.
Computational investigation of hydroplaning risk of wide-base truck tyres on roadway
Published in International Journal of Pavement Engineering, 2020
In tyre hydroplaning analysis, the focus is global contact between tyre and water or pavement surface, not the local deformation of tyre components. The rainwater flow and the resulting contact forces are more sensitive to the tread block geometry and the total kinetic energy of tyre (Cho et al.2006). In the tyre model, the reinforced rubber part is modelled as composite material, where steel belts and radial plies are embedded in rubber components. The rubber is modelled as hyperelastic material to capture its incompressibility and nonlinearity, while the belt reinforcement is modelled as linear elastic material with high modulus (Ding and Wang 2016, 2017).
A literature review on the technologies of bonded hoses for marine applications
Published in Ships and Offshore Structures, 2022
Chiemela Victor Amaechi, Facheng Wang, Idris Ahmed Ja’e, Aaron Aboshio, Agbomerie Charles Odijie, Jianqiao Ye
In the industry, fatigue calculations for flexible hoses and flexible marine risers have been calculated using different methods like fatigue life estimations, S-N curves and Bending Strength Ratio (BSR) methods (Rampi et al. 2006; Ellis et al. 2008; Lassen et al. 2010; Chibueze et al. 2016). Lassen et al. (2010) carried out a fatigue test and the ultimate strength of steel reinforced rubber loading hose according to API 17B (API 2014a). Fatigue test conducted on the rubberised hoses showed complexly high deformations in cyclic motion. Rampi et al. (2006) investigated on the fatigue of Oil offloading Lines (OOL) – a special marine bonded hoses for offloading, as presented in Table 10, and had some good findings with failure, attributed partly to some vibrations from the test bench, as shown in Figure 18. In another investigation summarised in the hose models in Table 11, Lassen et al. (2014) also presented a fatigue life prediction approach and a FEA for bonded loading hoses with severe loading evaluations, and found that burst pressure affected hose fatigue. Using a catenary design for some repeated reeling under high hose tension, the bonded loading hoses were exposed to severe, bending, tension and pressure. From the investigation, it was observed that reeling has an underlying effect on the hoses, especially the ones close to the helix. Various studies on the fatigue of marine hoses with highlights on their findings are given in Table 11. Various studies on the fatigue of marine hoses with highlights on their findings are given in Table 11. Other types of marine hose investigations exist in literature (Cho and Yoon 2016; Tonatto et al. 2016a, 2017a, 2017b, 2018, 2020).