Thermal Coating

Among the components exposed to heat load, piston of internal combustion engine is subject to maximum thermal stress. The large temperature gradient the piston will cause structural deformation deterioration of lubricant and increase the clearance between the cylinder liner and piston there by causing more noise, vibration degrees in the engine service life, the non- uniform temperature gradient arise owing damage of piston especially crown region. Experimental study is conducted on single cylinder 5hp diesel engine in order to find the improved performance when a ceramic coating is given especially in the piston crown.Among the ceramics, Yttria partially stabilized Zirconia (YPSZ) is being favoured for diesel engines since its co efficient of thermal expansion is close to those of metals used in piston. This avoids problems relating to difference in thermal expansion between metallic and thermal parts which also increases its durability. Compared to the conventional engine (without coating over the piston crown) the modified engine (with ceramic coating over the piston crown) did not produce any observable knock in the engine, no significant wear of piston crown.Various graphs are drawn to check the improved performance of the engine when it is at with and without ceramic coating on the piston crown, and found that there is 5-6% decrease in SFC, 4-5% increase in brake thermal efficiency and 8-9% increase in mechanical efficiency. INTRODUCTION: Thermal barrier coatings were originally developed for air craft engine applications in 1940; only recently have they been modified and tested for use in diesel engines.Although diesel engines has greater compressive loads and more frequent thermal shocks, in additional, diesel TBC’s must cope with contaminants (Sodium, Vanadium, Sulphur ) often found in lower grade fuels. If these difference in engine operating conditions are ignored when choosing and applying a T. B. C premature failure of the coating can result . Diesel TBC’s are coating systems metallic bond coat and ceramic topcoat applied by the plasma thermal spray process; control of total coating thickness is critical. If not maintained within 0. 8mm, spallation of the coating can occur due to uneven heating and cooling of the process of the topcoats, Robotic thermal spraying provides the required thickness and compare values with established standards. Basically, there are three techniques of thermal spraying. The basic principle is the same for all (i. e. ) material is melted and propelled as finely atomized towards the target as the particle strike the surface they flatten and form thin platelets that conform and adhere to the irregularity of the prepared surface and to each other.The three techniques differ essentially in the fuel and the method of heating/ melting used. These differences give to the advantage and limitations which to considerable extent govern their range of applications. Thermal spraying infact is a grou p of processes i. e. , 1. Surface preparation and 2. Thermal spraying Both are basically important as far as quantity of the coating is concern. Coating of a material on a substance is made to serve in the specific environment and service conditions.It is possible only if the coating is adherent to the surface of the component, on which it is sprayed, tthroughout its useful life. If the coating flakes off or leaves the surface, the entire effort will go waste. The adhesion and other properties of the coating mainly depend on the surface condition of the substrate.

A Tragic Heroine

Tragic Heroine that Triumph Margaret Edison’s play Wit is about Vivian Bearing, a professor of seventeenth century poetry, specializing in John Donne. She is a strong willed intellectual being treated for ovarian cancer. Vivian lives a very secluded life and avoids human emotional contact. Just like any tragic hero, Vivian has flaws that prevent her from human kindness, which leads to her downfall. Her treatment of cancer causes her to realize that she needs emotional connection, which she has missed her whole life. Although her flaws are her intellect and wit that cause her an inability to connect emotionally with people around her, she becomes noble because she begins to express her emotions and accept kindness. Vivian Bearing has lived an intellectual rather than emotional life. As a child, education was very important to her family. On her fifth birthday which she recalls as her best birthday she read a book (Edson 41). She would rather read a book than have a party, cake or even having friends over. Reading a book during her birthday is very ironic because she claims this to be her best birthday which is really unique, because this is horrible as any standard for a fifth birthday. Most five year olds want a party and cake. Vivian takes the book and she reads its spine intently. Reading a book attentively on her birthday proves Vivian’s obsession with learning and expanding her horizons. She is only interested in learning, not worried about connecting with people her own age or even her family. While she is reading her book, her father sits on his chair â€Å"disinterested but tolerant† (Edson 41). Since her father does not pay any attention to her, Vivian is emotionally detached from her father. She only knows education and learning. She never mentions receiving any affection as a child. This is the only time she mentions her childhood. One can only assume that because of this the character’s own remote personality reflects that of her father’s. It is very likely that she never received the gentle touch of affection from her dad, the way she probably would have from her mother, if the mother had been in the picture. We know that her mother died at the age of forty, but other than that, nothing else is either mentioned or displayed regarding her. Vivian’s intellect and crave for knowledge continues to prevent her from human emotional connections. We meet Vivian as a student in a flashback. Her scholarship was her consuming and unrelenting passion, blinding her to other concerns of life like making friends. Despite being advised by her professor to enjoy life, she resorts to withdrawing into the library instead of going out (Edson 15). Her toughness and strictness towards her education blinds her treatment of humanity. She remains lonely and uses her education to cover her need for showing and needing emotional attachment. She does not enjoy her college life like most students do. Her intellect refuses her to show a need of emotional connection with students her own age. Her emotional detachment is apparent when she is told that she has ovarian cancer. Instead of crying and being afraid of death, she begins to analyze and think. â€Å"Must read something about cancer. Must get some books, articles. Assemble a bibliography,† she explains (Edson 8). The character’s excessive need for knowledge, which can be perceived as her tragic flaw, causes her to be oblivious to the reality of her diagnosis. Vivian is consumed with learning that she is unable to grasp with the reality that she has a disease that is slowly killing her. Her need for knowledge can be seen as a flaw because this prevents her from becoming psychologically attached to anything or anyone. Vivian thrives on knowledge and her ability to learn and understand things and uses her intellect to avoid human contact. The character’s addiction to intellect has shut down her need for any human emotions. Vivian’s wit appears as rude and uncaring when she uses her wit to push people away. Vivian’s smart remarks to everything cause people around her and also people that meet her to be unable to create a relationship with Vivian. When Vivian is diagnosed with ovarian cancer, Dr. Kelekian uses the word â€Å"insidious† and defines it as â€Å"undetectable† (Edson 8). Vivian is unable to control her witty comments and could not resist the urge and decides to tell him the correct definition saying â€Å"treacherous†. Dr. Kelekian has a negative attitude towards her because of these corrections. Instead of treating her cancer, he decides to use her as research. Dr. Kelekian is unable to feel any compassion for her because she is rude. Vivian’s wittiness also appears as being uncaring. She is not liked very much by others, due to her unkindness. Previously, when a student asked for an extension on his paper, Professor Bearing rejects his request with a heartless comment. â€Å"Don’t tell me, your grandmother died† (Edson 63). Then she goes on to say, â€Å"Do what you will, but the paper is due when it is due† (Edson 63). Instead of showing some sentiment for the student, she is inconsiderate and cold-hearted towards him. She is so evil towards the student that no other student is able to feel comfortable around her and even speak to her as a person. She terrorizes her students inconsiderately and dispassionately. Vivian Bearing uses her wittiness to push people away so she does create an emotional attachment. Being put in hospital causes Vivian to reflect on her life and to realize how much she needs kindness. She even admits to craving kindness. She wants Susie to come see her to the point where she creates an emergency (Edson 64). She begins as an intellect, witty professor who is lonely, but now she is thirsty for a drop of kindness. Vivian’s hunger for kindness becomes apparent when she allows her nurse to call her sweetheart† (Edson 64) or honey(Edson 65). These are words Vivian has never been referred to in her life and she is comfortable with them. She realizes that it is acceptable to allow people to treat her like a person and be kind to her. Vivian starts to open up and shows her emotions without any problem or hesitation. At the end of the play when Vivian is lying in her deathbed, alone, shivering scared, and in pain, E. M. comes to her side. When her college professor Ashford comes to visit her, she asks Vivian if she wanted her to recite Donne, she replies â€Å"nooooo† (Edson 79). Vivian is finally realizing that her need for intellect and wit is not what she needs because she has received kindness. The emotional part of life is what she needs and not the complicated poems by Donne. As her time draws to a close, a sea change begins to work in the way Vivian thinks about life. As mentioned in the above paragraphs, Vivian has devoted her life to education and it is only through suffering that she learns that being extremely smart is not enough. It takes our heroine fifty years, and an insidious cancer to realize that it does not matter in the end how much you know since knowledge cannot possibly comfort you in death. Vivian says this line in the play â€Å"And death shall be no more, death thou shalt die (Edson 72-73). By these words she learns that death is nothing but a breath, a comma that separates life from life everlasting, Vivian’s last breath was nothing but a comma† and she has now moved on where she will live not by her knowledge, but by her heart. Though her body has died, her soul is awakened. Before Vivian’s final moments of life, she receives the attention and affection that she never had. She dies with a sense of peacefulness. Vivian Bearing is a very intellectual and witty individual who is dedicated to her love for know ledge. But because she is consumed by her incredible love for knowledge she lives a secluded life. Her downfall is that she is incapable of showing any emotions to another person. The play did not leave the audience with a sense of sadness or remorse, but with hope and respect for Vivian Bearing. She lived the final eight months of her life in extreme pain so doctors could gain more knowledge for future cancer patients. In the process, she learns that life is about humanity. This is what brings the audience to believe that this individual is a tragic hero who triumph and leaves one not with a sense of pity but one of empathy for her suffering.

Canadian Monetary and Fiscal Policies Essay Example | Topics and Well Written Essays - 1750 words

Canadian Monetary and Fiscal Policies - Essay Example Despite the challenges that have characterized the West in the recent past, the last two years have not really been a sad affair for Canada. Despite the economic recession that affected most countries across the world, the recovery process in the case of Canada has rather been a positive affair often realized from the economic trend in the country. In these post recession days, Canada has evidenced the highest economic growth rates in the G-7 economic block. Presently, Canada’s fiscal position is certainly the strongest amongst the G-7 countries and this helps to confirm the proper economic policies of the Canadian government in the recent past. The focus of the government in this regard is to ensure that the country remains attractive and economically stable for the purposes of investment and economic realization. The government’s Economic Action Plan, Budget 2011 was designed in a way to enhance and promote the financial strength of the families in Canada, to create a competitive tax system that attracts investment, to promote innovation and to bond the emerging trade relations between Canada and other countries. In any case, it has been realized that most of these policies have actually been realized in the process of economic recovery and the evidence relates to the fact that the country ranks the top in several economic respects across the world. Through the Economic Action Plan, the government has instituted various policies ad measures that have greatly benefited the country and continue to create positive economic impact on the face of the country. Through the plan, the government is committed to encourage the growth of skilled workforce in the economy through apprenticeships and skilled trades which are indeed churning out thousands of skilled works into the Canadian economy. Presently, the government invests over $40 million annually towards the new Apprenticeship Competition Grant (ACG) (Pasma 2012). This is in addition to the Apprentic eship Incentive Grant (AIG) which has been in existence for several years. Through these programs, it is realized that over 20,000 apprentices are rolled into the economy and get certified after the required period. The Canadian economic success has over the last two years largely depended on the country’s ability to export goods to other countries. While most countries in the West are trying to re-strategize and recover from the detrimental effects of the economic recession, the government of Canada’s main preoccupation has always been the need to create the positive and favorable economic climate in order to enhance and improve the balance of trade for the country. In this respect, Canada has an advantage over the rest of the countries owing to the various policies that have always existed and have greatly been advocated by the government in the last two years. For instance, the Canadian financial system is certainly the strongest in the world. The institutions and h ousehold in Canada are also some of the financially stable units in the industrialized world. All these positivities are basically a consequence of the economic orientation which the Canadian government has always pushed for over the decades. Upon the realization of the critical effects of the financial meltdown, the government was at the forefront in enhancing its fiscal measures so as to boost the growth of the economy and create a stronger economy that can easily withstand the strong waves of the economic

Joe Orton and the Counter Cultural Movement in the 60's Essay

Joe Orton and the Counter Cultural Movement in the 60's - Essay Example The hardship during the days of the Second World War gave birth to the newest possible philosophies that state it is obvious to follow the trend of open market economy with all its perception of high yielding materialism. This hard cored materialism and pro life oriented attitude was previously known in the western world but now it came into a maximized form which sociologist refer as a pro active action against the mass destruction and insecurity of the last great war. The latest philosophy was to obtain as much as possible that life has to offer. Every social aspect changed with it and along with it changed the world around them. Plays and writer were no different. Colours became more vibrant and approach became more outrageous to keep up with the society. Joe Orton's plays were a product of this period. The funny side of this approach was however different from the basic perception of the life styles of the 1950's through the later 1960 were a confluence of conflicting philosophies. ... (Fletcher, 135-9) It is a well known fact and it has been shown time and again by many literary historians and researchers that the main targeted audience were the baby boomers who had all the opportunities to take all the advantages of almost any and every marketing gimmicks. But Joe Orton's plays had their own vibes even though they supported the antiestablishment norms of the time. Joe Orton was born in 1933 at Leicester and is famous for his social satires in modern playwright history. His career actually span only five years from 1964 to 1967 but within this short time he amused, shocked and outraged the audience with his prolific sense of black comedies that are predominantly scandalous in nature. His major plays include The Ruffian on the Stair, Entertaining Mr Sloane, Loot, The Erpingham Camp, The Good and Faithful Servant, Funeral Games and What the Butler Saw. During his short term as a successful playwright Joe Orton depicted in his plays what was going around in the outer world but he presented them in his own unique manner. (Fletcher, 221-26) Entertaining Mr Sloane was first presented on 1964 and this play appears to be a sexual innuendo with the treatment of a dark presentation. Here we find the characters indulge themselves in murder and rimes associated with murder with little or no repent at all. The sexual approach appears to be reflecting the course of action of the 1960s and ethical values are just not entertained at all. More in alignment with the context of the antiestablishment principals the characters are not will the authority to bring or reach to the aspect of justice but they are more concerned with the living and tend to extract the most out of

Torture Essay Example | Topics and Well Written Essays - 1500 words

Torture - Essay Example This paper examines the pivotal differences between Alan Dershowitz and Elaine Scarry on the question of physical torture in order to determine whether the arguments of the former are adequately tackled by the latter as well as the actual possibility of establishment of public accountability standards for extraordinary measures such as the use of physical torture to prevent terrorism. The Ticking Bomb Argument The controversy surrounding the use of torture to prevent terrorism is explicitly demonstrated via the â€Å"ticking bomb scenario†, where a captured terrorist refuses to divulge information concerning the imminent use of weapon – whether nuclear, biological or chemical device – capable of killing and injuring a huge number of civilians (Dershowitz 259). The grave moral dilemma here is whether the captured terrorist should be subjected to torture in order to disclose the location of the device or the bomb to be allowed to explode and kill perhaps thousands of people because of legal and moral considerations. In other words, the safety and security of a nation’s citizens must be weighed against the preservation of human rights, which engenders a choice between one evil or another (Dershowitz 266, 272). While both Dershowitz and Scarry agree that the ‘ticking bomb’ scenario is a rather hypothetical situation, they consider its implications for the individuals and institutions involved, as well as for the society as a whole, from vastly different points of view. According to Dershowitz, in nations such as Israel, for example, where both terrorism and the use of torture to prevent terrorism are anything but hypothetical, the ticking bomb case in fact provides a moral, legal and intellectual justification for applying the system of coercive interrogation (258-9). On the other hand, although being generally deemed unproductive, those methods – euphemistically called by the Israeli Security Services (GSS or Shin Be t) themselves â€Å"moderate physical pressure† – sometimes proved successful and led to prevention of terrorist acts that otherwise might have killed many civilians (Dershowitz 258). The latter observation, however, implies that the possibility of an actual ‘ticking bomb’ case shouldn’t be readily ruled out. Similarly, following September 11, 2001, it has become not so rare practice in the US security and intelligence services to employ rough interrogation technique

TEXAS ELECTIONS Essay Example | Topics and Well Written Essays - 250 words

TEXAS ELECTIONS - Essay Example For example, in the 2000 Election Williamson County voted 67.79% for Republicans compared to 47.87% National, 59.29% Statewide, and 46.88% Travis County. In the 2004 Election Williamson County voted 64.96% for Republicans compared to 50.73% National, 61.08% Statewide, and 41.99% Travis County. In the 2008 Election Williamson County voted 55.75% for Republicans compared to 45.67% National, 55.45% Statewide, and 34.44% Travis County. This last election showed that more Republicans voted for Obama than McCain when compared to when Bush was a candidate. The Governor Elections had the same trend. In the 2002 Election, Williamson County voted 68.34% for Republicans; whereas statewide 57.80% voted Republican and Travis County had 46.76%. In the 2006 Election, Williamson County voted 42.79% for Republicans; whereas statewide 39.02% voted Republican and Travis County had 26.43%. It must be noted in this election both Republican and Democratic votes suffered due to two independent candidates. The trend between Williamson County and Travis County was Williamson County voted less for Freidman 11.37% to Williamson County 13.49% and a state wide percentage of 12.44%.

5 points Essay Example | Topics and Well Written Essays - 250 words

5 points - Essay Example The story with the title â€Å"The New Dress† tells us about a female who wants to look beautiful (Woolf, 1975). The nonprofessional writers take up writing as a hobby and because of this reason, write short stories in order to manage their passion with other chores of life. The short stories are attributed to female writers but it is not always true. Every individual can or have faced loneliness during his or her life. However, some of us turn to listening sad music and others write about it in order to get it off the minds. The human need to manage stress can turn anyone towards writing regardless of gender so considering females capable of writing good short stories in utterly wrong. Poems are traditionally used to express one’s emotions and feelings about a particular subject matter and therefore, the short stories have some commonalities with the medium of poem as both of them are composed in order to express an individual’s feelings. The era when females were considered and treated as a suppressed social class is almost gone because women are now engaged in corporate world as CEOs. The short stories have become a medium that is used to dump psychological pressures on to the paper and therefore, any number of reasons can cause a man to write a story as it will force the woman to do so. The editors and publishers view story from a readers’ viewpoint and if they believe that it has the power to attract readers then they will publish the work. As mentioned earlier, the short stories will be used to express emotions and feelings by men and women alike. Secondly, they are considered as an informal means of writing and finally, they are livelier because readers think that the writer in talking to them directly and the feeling comes as the stories are composed in a narrative