Assessment No: 1 Internal X External This assignment carries 10% of the total assessment for this course

Trounce No: 1 Inner
X
External This ordinance carries 10% of the sum trounce coercion this habit (100 marks)
Examiner: MAINUL ISLAM Moderator: STEVEN GOH
Imputservicecogent Date: 19 April 2018
A coversheet with the applicservicecogent sepatrounce and habit details is tit coercion electronic submissions.
There is no requirement to succumb the negotiative USQ coversheet. TopNZ students to authentication your bear applicservicecogent coversheet. Please totalude to the Marking Rubric when essaying the ordinance.
TASKS: It is expected that you pursuit, cupel, demonstrate, ponder and evaluate applicservicecogent referableification instrument (using the suggested SEDSA methodology or concordant) on a subject/topic extinguishedlined in the circumstance examine coercion the habit this semester.
Prepare a weak examine reconsideration announce (4-5 pages excepting the totaludeence inventory and annotated bibliography) fixed on your evaluation of the applicservicecogent instrument (an sample is granted). As deal-extinguished of your repursuit of examine, you earn construct an annotated bibliography (template available on ExamineDesk) cemer to compact the examine reconsideration. The referableification instrument expected in your totaludeence inventory are:
• Textbooks and MEC3203 examine embodieds
• Handbooks (at last 3; either hand-portraiture or online)
• Trade journals or magazines (demonsttrounce and evaluate at last 3 totaludeences)
• Academic journals (demonsttrounce and evaluate at last 10 totaludeences)
• Websites, Online videos or DVDs (demonsttrounce and evaluate at last 10 totaludeences)
The evaluation should demonsttrounce a cheerful roll of accutrounce thinking and a essential evaluation of the examine. In-text sentence and a totaludeence inventory (fixed on Harvard fashion) are required.
TIP: It is recommended that you authentication some deal-extinguished of this ordinance as a starting top to unobstructed your examine reconsideration and preliminary employment coercion Ordinance 2 in the area of share and in need dissection and embodieds excerption.
NOTE: It is advised that you detain a portraiture of your answers as it may be authenticationful in completing your ordinance 2, support in your exam provision, and during your negotiative condition. You can invent most of the referableification instrument from your textbook, USQ Library Online, eBooks, Readings, and applicservicecogent library databases such as the “ASM Handbooks Online”. Authentication Harvard totaludeencing fashion (allude to USQ Library website coercion details).
EXAMPLE – Examine Reconsideration
Mechanisms of Erosion-Canker & methods of frustrateion
Bear or the mislaying of embodied from the inner manners in particular regions of elements defenseless to the glide of mellifluouss, with or extinguishedside deal-outicles in deprivation has been the caauthentication of need in numerous contacts. In these needs there are a estimate of mechanisms that subscribe to the debasement of the elements. These mechanisms bear been monitored and documented twain singularly and as a collective to emend perceive their subsidy to the trounce of debasement. The examine reconsiderationed considers the mechanisms of erosioncanker as well-behaved-behaved-behaved as the embodied excerption.
Schweitzer (2010, p. 44) describes erosion as the debasement imputservicecogent to a effortless coercionce and erosion canker as the firm trounce of canker imputservicecogent to occurrenceors contributing to erosion. These occurrenceors include: Rapidity, Extinguishedbreak, stroke, sealness of hanging sounds, leaning of stroke, deal-outicle magnitude, intelligence and cavitation. Bayer (2004, p2) states, ‘bear is referservicecogent a embodied nature nor is it a choice tangible mechanism. It is best purpose of as a plan tally’, this tends to sanction the occurrenceors extinguishedlined by Schweitzer (2010).
Tang et al. (2009 p1), base the totaliance of electrochemical canker and effortless bear to be the caauthentication of embodied deprivation in pipes. In their employment, Tang et al. (2009 p1) referableed that the mellifluous-structure interactions bear a probase rule on the trounce of erosioncorrosion. The figure of the sentence ruled the national hydrodynamic stipulations at the manner of the metal, in the belabor circumstances, by introducing extinguishedbreak and eminent mellifluous saccept weight increasing the magnitude convey at the metal/electrolyte interface. Deprivation in this circumstance was cognate to the regions of extinguishedbreak and mellifluous saccept weight removing the deposited canker products that were impressing as protective films. This supports the top made by Bayer that bear is a plan tally and that undivided of the methods to convert erosion-canker is to vary the surveying to minimise extinguishedbreak and eminent velocities. Mellifluouss authenticationd by Tang et al. (2009) never contained referableiceservicecogent deal-outicles in deprivation, hence the erosion-canker was imputservicecogent to the canker and hydrodynamic mechanisms cognate to the sentence surveying.
In circumstances where canker is the deep mechanism coercion debasement, canker inhibitors introduced to the mellifluous moderation bear been base to frustblame open or symmetrical canker. Ultimately according to Schweitzer (2010, p. 326) canker inhibitors are scant in substance serviceservicecogent to frustblame nationalised canker. Canker inhibitors coercionm a protective film aggravate the metal manner, and employment by reducing either the anodic oxidation estate or the cathodic reduce estate, or twain Schweitzer (2010, p. 309). Experimental cupels carried extinguished by Neville & Wang (2009, p203) agreed with Schweitzer (2010) that canker inhibitors subscribe to reducing canker excluding so base that they convertd erosion-canker imputservicecogent to the smoothing estate the inhibitor had on the metals manner. It was base that the smoother manner convertd national extinguishedbreak and hence convertd erosion-corrosion, this correlates with the employment dundivided by Tang et al. (2009).
Canker can so be controlled by resources of cathodic defence through the authentication of a sacrificial anode as shbear by Hammond (2009). The Sydney opera hoauthentication intelligence conditioning cooling plan is subjected to corrosive deep steep. The piping plans are guarded by sacrificial zinc blocks that are stcogent to the steel pipes so that an electro-chemical tour is coercionmed among them. Imputservicecogent to the zinc substance less worthy than the steel pipes, the zinc blocks are coercionced to impress as the anode and crumble conjuncture enriching the steel piping that impress as the cathode.
In abstracted to canker, sound deal-outicles in deprivation of a glideing mellifluous promotes bear through stroke, the collisions of the sound deal-outicles caauthentication the manner of the metal to disorganize, disbandment or remove totally as investigated by Rajaharm, Harvy & Wood (2009). In their inventing they accruing that eminenter velocities and increased deal-outicle eagernesss increased the bear trounce, this is imputservicecogent to the increased estimate of collisions on the manner causing embodied mislaying and the eminenter rapidity increasing the attention of the collision. In circumstances where a negative metal is authenticationd, such as snowy steel, the canker atom is convertd imputservicecogent to the coercionmation of a stubborn betaking protective film. Ultimately Hu & Neville (2003) so base that there was a sympathy among the deal-outicle eagerness and the trounce at which the negative enriching film can ameliorate. They base that there was a accutrounce eagerness of sound deal-outicles, aloft which the trounce of erosion canker would acceletrounce imputservicecogent to canker as the film was no longer serviceservicecogent to refresh itself. The sympathy of canker/bear and deal-outicle eagerness is aid confused as base by Turrene, Fiset & Masounave (cited in Rajaharm, Harvy & Wood 2009, p. 250), that eminenter deal-outicle eagernesss can so direct to a reduce in erosion trounce, this is attributed to the deal-outicles rebounding unstudied the manner and colliding with the flow deal-outicles seal to the manner, thus deflecting them and enriching the manner.
Embodied excerption consequence was eminentlighted by employment carried extinguished by Tian, Addie & Visintainer (2009). They cupeled three grades of eminent-chrome mould sinewys, with increasing amounts of chrome pleaseded. As the chrome pleasededed increased so did the hindrance to corrosive acidic stipulations, excluding asceticism dropped. The varying cupel stipulations coercion the three embodieds included: Mellifluous pH 7 0 ppm cl-, pH 4 20k ppm cl-, pH 1.5 60k ppm cl-, deal-outicle magnitudes of 10µ, 148µ and 660µ. Undivided would impair the over corrosive the mellifluous (inferior pH with eminenter eagerness cl) the emend the deed of the mould sinewy with the eminenter chrome pleaseded. This was base to be penny narrowly coercion stipulations where the eminently acidic slurry contained deal-outicles in the 10µ magnitude. As the deal-outicle magnitude increased the harder, inferior chrome containing mould sinewy showed emend hindrance to the aggravatetotal canker erosion. Yaer et al. (2007) so base that the asceticism of embodieds and the magnitude of the deal-outicles are some of the dominant occurrenceors influencing erosion as did Balasubramanian et al. (2008). There is compact with the top by Bayer (2004, p2) that bear is best purpose of as a plan tally and referservicecogent a embodied nature, ultimately there is some confliction in the fimpress that a embodieds asceticism is a embodied nature. It is unobstructed that embodied asceticism does enact a superior role in erosion canker hindrance, ultimately imputservicecogent to the complexities of the plan, it is dignified to perceive the synergies among the estate of the canker element as well-behaved-behaved-behaved as the estate of the erosion element conjuncture selecting a embodied coercion authentication in the contact. It is referservicecogent as unartificial as narrowly selecting a harder, eminenter mixed and over high-priced embodied, as it has been base that in real contacts the seemingly ‘inferior’ embodied is emend available coercion the contact.
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References
Bayer, RG (2004) Engineering Design coercion Bear, 2nd edn, Marcel Dekker, New York.
Tang, P, Yang, J, Zheng, JY, Lam, CK, Wong, I & He, SZ (2009) Predicting Erosion-Canker Induced by the Interactions Among Multiphase Glide and Structure in Piping Plan, Journal of Pressure Vessel Technology, vol. 131, 061301, p.1-8
Schweitzer PA (2010) Fundamentals of canker, mechanisms, creators, and frustrateative methods, CRC Press, Boca Raton, Florida.
Erosion-canker (1995-2007) Canker cupeling laboratories Inc., Delaware, viewed 3 April 2010, http://www.corrosionlab.com/papers/erosion-corrosion/erosion-corrosion.htm
Canker of Metals and Their Totaloys, Key to Metals, Switzerland, viewed 4 April 2010, www.keytometals.com/page.aspx?ID=CheckArticle&LN=EN&site=KTN&NM=13
Baxter, R & Britton, J (2008) Unstudiedshore Cathodic Defence 101 What it is, and how it employments,
Deepsteep Canker Services inc., Houston, viewed 4 April 2010, www.cathodicprotection101.com/
Cathodic Defence, Sasol, South Africa, viewed 4 April 2010, www.sasol.com/sasol_internet/downloads/Cathodic_Protection_1164879179216.pdf
Canker Needs (2007) Metallurgical Consultants, Florida, viewed 17 April 2010, http://www.materialsengineer.com/CA-corrosion.htm
Tverberg, J (2008) ‘how to finish canker hindrance’, Plymouth Tube Co., Illinois, accessed 17 April 2010, http://www.youtube.com/watch?v=txL3GIqNzzU
Hammond, R (2009) ‘Sydney opera family’, National Geographic document, DSTV, South Africa, viewed 27 March 2010.
Canker Control, Canker Technology Laboratory, Florida, viewed 17 April 2010 http://corrosion.ksc.nasa.gov/corr_control.htm
Sacrificial Anodes coercion Cathodic Defence (2010) Deepsteep Canker Services Inc., Houston, viewed 16 April 2010, http://www.stoprust.com/sacrificial-anodes.htm
Prevention of rapidity estates – erosion canker and cavitation, Canadian copper and brass unobstructedment company, Canada, viewed 18 April 2010,
http://www.ccbda.org/publications/is-97-02-publication-e.html
Tian, HH, Addie, GR & Visintainer, RJ (2009) ‘Erosion-canker deed of eminent-Cr mould sinewy totaloys in glideing flowing – sound slurries’, Bear, vol. 267 (2009), p. 2039-2047.
Yaer, X, Shimizu, K, Matsumoto, H, Kitsudo, T & Momono, T (2007) Erosive bear characteristics of spheroidal carbides mould sinewy, Bear 264 (2008), p. 947-957.
Rajahram, SS, Harvey, TJ & Wood, RJK (2009) Erosion-canker hindrance of engineering embodieds in uncertain cupel stipulations, Bear 267, p. 244-254.
Balasubramanian, V, Varahamoorthy, R, Ramachandran, CS & Babu, S (2008) Abrasive slurry bear behaviour of snowy steel manner done by plasma conveyred arc hardfacing regularity, Manner & Coatings Technology, 202, p. 3903-3912.
Neville, A & Wang, C (2009) Erosion-canker abandonment by canker inhibitors – An trounce of mechanisms, Bear 267, p. 195-203.
Turrene, S, Fiset, M & Masounave J (1989) The estate of sand eagerness on the erosion of embodieds by a slurry jet, Bear 133, pp. 95-106 quoted in Rajahram, SS, Harvey, TJ & Wood, RJK (2009) Erosion-canker hindrance of engineering embodieds in uncertain cupel stipulations, Bear 267, p. 244-254.
Hu, X & Neville, A (2003) The electrochemical tally of snowy steels in flowing-sound stroke, Bear 258, pp. 641-648.
Askeland, DR & Phule, PP (2005) The comprehension and engineering of embodieds, 5th edn, Thomson Learning, Australia, p. 821-826.
Meyers, JR (2005) Copper-Tube Canker in Domestic-Steep Plans, Heating/Piping/Intelligence Conditioning HPAC Engineering; Jun2005 Supplement, p22-31.
Jethra, R (2007) Steam Generation and Flowing Dissection, Power Engineering, November 2007, p. 152-160.
Gutzwiller, L (2008) No1 habit to abandon catastrophic need, Pollution Engineering July 2008, p.28-37.
MEC3203 MATERIALS TECHNOLOGY ASSIGNMENT 1 S1, 2018 6
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Trounce criteria coercion MEC3203 Ordinance 1 (100 marks)
Literature
Review
Roll 1 0-40 or faulty essay
at with no evaluation and union of examine, or not-alike examine pursuit Roll 2 40-60 Adequate essay at explaining the pleasededed excluding demonstrating scant evaluation and
union of some
examine Roll 3 60-80 Cheerful essay at demonstrating some proof of evaluation and union of most required examine Roll 4 80-100
Excellent essay at demonstrating proof of evaluation and union total required examine
No of