Manufacturing process for (intermediate modulus) IM Carbon fibre Coursework

Manufacturing process for (intermediate modulus) IM Carbon fibre reinforced composites - Coursework Example In certain procedures, the plastic is combined with some chemicals and forced through minute jets into an element bath or stimulate chamber where the plastic congeals and hardens into fibers. This is alike to the procedure applied to give polyacrylic textile fibers. Alternatively, the plastic combination is heated and propelled via minute jets into a chamber where the solvents vaporize, and remains a solid fiber (Mazumdar, 2002). The spinning stage is significant since the internal atomic arrangement of the fiber is made during this procedure. The fibers then are cleaned and strained to the preferred fiber breadth. The straining aids align the particles within the fiber and delivers the root for the creation of the firmly bonded carbon crystals after carbonization. Before carbonizing the fibers, they are chemically changed to transform their linear atomic bonding to a further thermally steady stepladder bonding. This is fulfilled by heating them in air to around 390-590Â ° F for between 120 minutes. This grounds the fibers to take oxygen particles from the air and reposition their nuclear bonding arrangement. The steadying chemical reactions are composite and include numerous steps, several of which happen concurrently (Morgan, 2005)... They too produce their particular heat, which ought to be controlled to evade overheating the fibers. Commercially, the steadiness procedure uses a variation of apparatus and systems. In some courses, the fibers are drained via a sequence of heated chambers. In others, the fibers are passed over rollers at high temperatures and through beds of unattached materials seized in suspension by a movement of hot air. Some methods use heated air combined with some gases which chemically hasten the stabilization. After the stabilization, the fibers are then heated to a temperature of around 1,830-5,500Â ° F for a number of minutes in a furnace full of a gas combination that does not comprise oxygen. The absence of oxygen avoids

The Poverty of Women and the Inequality of the Welfare System Essay

The Poverty of Women and the Inequality of the Welfare System - Essay Example She states that the welfare system is not designed for women on women's terms, rather, she considers that it shows, This clarifies the concepts of the dualism of the welfare structure, and how it may be broken down into two subsystems, male and female. Diana Pearce points out that older women choose to receive social security benefit as wives rather than as individuals, due to the higher income of their husbands. If they divorced during their husband's retirement, they were more likely to receive: A United Nations study, released in 1985, found that women do 75 percent of the world's work but only earn 10 percent of the world's wealth (Kirk and Okazawa 318). After 20 years, the situation has changed. Today, more women work for an income than ever before. According to the Bureau of Labor Statistics, women's participation in the labor force has dramatically increased from 54 percent in 1950, with a projected increase to more than 70 percent in 2010. In spite of the growing number of women in the workforce, women's wages are usually lower than men's. The question as to why, may be answered by the fact that a patriarchal system exists which gives a false picture of the workforce. Fraser's essay informs us that these patriarchal norms have influenced our welfare system too. In our welfare system, men are considered as "rights-bearing beneficiaries" whereas women are considered as "dependent clients" (Fraser, 561). Diana Pearce states that the rate of poor, women-maintained households has increased, especially if they have children. Despite the greater needs of women-maintained households, there is not enough support given from either private or public transfer. In public transfer, based on Fraser's characterization of the U.S. welfare system, there are two totally different characteristics of welfare. One is unemployment and social security welfare transfer (cash), that is designed to provide benefits for "right-bearers", of which women receive 38 percent of these programs. Yet more than 80 percent of those receiving Aid for Dependent Children (AFDC) are children of women-maintained households. Women also receive 60 percent of food stamps. Fraser assumes that receiving unemployment and social security compensation denotes more equality than receiving food stamps and Medicaid. This is because the latter welfare programs are: "considered to be family failures, generally the absence of a male breadwinner" (Fraser, 563). Diana Pearce addresses the seriousness of women's poverty, and how it has been steadily increasing, while Fraser argues how the welfare system is unfair to women. In order to reduce the "feminization of poverty", the government needs create more jobs for women and women-maintained