Impost No: 1 Interior
External This enactment carries 10% of the whole impost ce this coercionm (100 marks)
Examiner: MAINUL ISLAM Moderator: STEVEN GOH
Ascribconducive Date: 19 April 2018
A coversheet with the applicconducive favoring and coercionm details is available ce electronic submissions.
There is no accomplishment to relate the functional USQ coversheet. TopNZ students to portraiture your hold applicconducive coversheet. Please relate to the Marking Rubric when violateing the enactment.
TASKS: It is expected that you inquiry, criticize, warrant, assimilate and evaluate applicconducive referable attributconducive attributableification resources (using the suggested SEDSA methodology or resembling) on a subject/topic quenchedlined in the condition con-aggravate ce the coercionm this semester.
Prepare a soon con-aggravate critique tidings (4-5 pages yet the relateence register and annotated bibliography) naturalized on your evaluation of the applicconducive resources (an sample is granted). As divorce of your reinquiry of con-over, you gain pacify an annotated bibliography (template advantageous on Con-overDesk) previous to communication the con-aggravate critique. The referable attributconducive attributableification resources expected in your relateence register are:
• Textbooks and MEC3203 con-aggravate representatives
• Handbooks (at meanest 3; either hand-portraiture or online)
• Trade journals or magazines (warrant and evaluate at meanest 3 relateences)
• Academic journals (warrant and evaluate at meanest 10 relateences)
• Websites, Online videos or DVDs (warrant and evaluate at meanest 10 relateences)
The evaluation should prove a cheerful plane of exinfluence thinking and a immanent evaluation of the con-over. In-text quotation and a relateence register (naturalized on Harvard mode) are required.
TIP: It is recommended that you portraiture some divorce of this enactment as a starting summit to educe your con-aggravate critique and preliminary work ce Enactment 2 in the area of curiosity-behalf and in demand anatomy and representatives option.
NOTE: It is advised that you conceal a portraiture of your answers as it may be portraitureful in completing your enactment 2, co-operate-with in your exam making-ready, and during your administrative personality. You can experience most of the referable attributconducive attributableification resources from your textbook, USQ Library Online, eBooks, Readings, and applicconducive library databases such as the “ASM Handbooks Online”. Portraiture Harvard relateencing mode (relate to USQ Library website ce details).
EXAMPLE – Con-aggravate Critique
Mechanisms of Erosion-Inactivity & methods of obviateion
Groove or the dropping of representative from the interior manners in favoring regions of factors defenseless to the issue of serenes, with or externally divorceicles in deprivation has been the caportraiture of demand in divers impressions. In these demands there are a sum of agencys that assist to the debasement of the factors. These agencys possess been monitored and documented twain singularly and as a gregarious to ameliotrounce apprehend their gift to the trounce of debasement. The con-aggravate critiqueed considers the agencys of erosioninactivity as courteous as the representative option.
Schweitzer (2010, p. 44) describes erosion as the debasement ascribconducive to a automatic cece and erosion inactivity as the stconducive trounce of inactivity ascribconducive to regulartyors contributing to erosion. These regulartyors include: Quickness, Noise, impression, govern of pendulous weightys, disposition of stroke, divorceicle largeness, sphere and cavitation. Bayer (2004, p2) states, ‘groove is referable attributconducive attributconducive attributconducive a representative estate nor is it a uncommon corporeal agency. It is best idea of as a order rejoinder’, this tends to strengthen the regulartyors quenchedlined by Schweitzer (2010).
Tang et al. (2009 p1), plant the construction of electrochemical inactivity and automatic groove to be the caportraiture of representative suspension in pipes. In their work, Tang et al. (2009 p1) referable attributconducive attributableed that the serene-structure interactions possess a proplant govern on the trounce of erosioncorrosion. The model of the avenue governd the topical hydrodynamic stipulations at the manner of the metal, in the pound stipulations, by introducing noise and ttotal serene abrade urgency increasing the body remove at the metal/electrolyte interface. Suspension in this condition was kindred to the regions of noise and serene abrade urgency removing the deposited inactivity products that were influenceing as protective films. This supports the summit made by Bayer that groove is a order rejoinder and that undivided of the methods to impoverish erosion-inactivity is to modify the surveying to minimise noise and ttotal velocities. Serenes portraitured by Tang et al. (2009) never contained referable attributconducive attributableiceconducive divorceicles in deprivation, future the erosion-inactivity was ascribconducive to the inactivity and hydrodynamic agencys kindred to the avenue surveying.
In stipulations where inactivity is the main agency ce debasement, inactivity inhibitors introduced to the serene moderation possess been plant to obviate public or equal inactivity. Eventually according to Schweitzer (2010, p. 326) inactivity inhibitors are scant in life conducive to obviate topicalised inactivity. Inactivity inhibitors cem a protective film aggravate the metal manner, and work by reducing either the anodic oxidation issue or the cathodic abate issue, or twain Schweitzer (2010, p. 309). Experimental criterions carried quenched by Neville & Wang (2009, p203) agreed with Schweitzer (2010) that inactivity inhibitors assist to reducing inactivity except too plant that they impoverishd erosion-inactivity ascribconducive to the smoothing issue the inhibitor had on the metals manner. It was plant that the smoother manner impoverishd topical noise and future impoverishd erosion-corrosion, this correlates with the work dundivided by Tang et al. (2009).
Inactivity can too be inferior by instrument of cathodic safety through the portraiture of a sacrificial anode as shhold by Hammond (2009). The Sydney opera hoportraiture essence conditioning subsidence order is subjected to corrosive ocean infiltrate. The piping orders are cetified by sacrificial zinc blocks that are determined to the steel pipes so that an electro-chemical circumference is cemed among them. Ascribconducive to the zinc life less dignified than the steel pipes, the zinc blocks are ceced to influence as the anode and eat suitableness indemnifying the steel piping that influence as the cathode.
In importation to inactivity, weighty divorceicles in deprivation of a issueing serene expedites groove through impression, the impressions of the weighty divorceicles caportraiture the manner of the metal to dissipate, laceration or disestablish altogether as investigated by Rajaharm, Harvy & Wood (2009). In their experienceing they deduced that taller velocities and increased divorceicle eagernesss increased the groove trounce, this is ascribconducive to the increased sum of impressions on the manner causing representative dropping and the taller quickness increasing the attention of the impression. In stipulations where a unquestioning metal is portraitured, such as snowy steel, the inactivity factor is impoverishd ascribconducive to the cemation of a wilful repairing protective film. Eventually Hu & Neville (2003) too plant that there was a kindred among the divorceicle eagerness and the trounce at which the unquestioning indemnifying film can rectify. They plant that there was a exinfluence eagerness of weighty divorceicles, over which the trounce of erosion inactivity would acceletrounce ascribconducive to inactivity as the film was no longer conducive to refresh itself. The kindred of inactivity/groove and divorceicle eagerness is excite involved as plant by Turrene, Fiset & Masounave (cited in Rajaharm, Harvy & Wood 2009, p. 250), that taller divorceicle eagernesss can too manage to a abate in erosion trounce, this is attributed to the divorceicles rebounding unpremeditated the manner and colliding with the current divorceicles bar to the manner, thus deflecting them and indemnifying the manner.
Representative option moment was talllighted by work carried quenched by Tian, Addie & Visintainer (2009). They criterioned three grades of tall-chrome manner sturdys, with increasing amounts of chrome gratified. As the chrome gratified increased so did the hindrance to corrosive acidic stipulations, except stoicism dropped. The varying criterion stipulations ce the three representatives included: Serene pH 7 0 ppm cl-, pH 4 20k ppm cl-, pH 1.5 60k ppm cl-, divorceicle largenesss of 10µ, 148µ and 660µ. Undivided would arrogate the over corrosive the serene (inferior pH with taller eagerness cl) the ameliotrounce the work of the manner sturdy with the taller chrome gratified. This was plant to be gentleman simply ce stipulations where the tallly acidic slurry contained divorceicles in the 10µ largeness. As the divorceicle largeness increased the harder, inferior chrome containing manner sturdy showed ameliotrounce hindrance to the aggravatetotal inactivity erosion. Yaer et al. (2007) too plant that the stoicism of representatives and the largeness of the divorceicles are some of the dominant regulartyors influencing erosion as did Balasubramanian et al. (2008). There is concurrence with the summit by Bayer (2004, p2) that groove is best idea of as a order rejoinder and referable attributconducive attributconducive attributconducive a representative estate, eventually there is some confliction in the finfluence that a representatives stoicism is a representative estate. It is serene that representative stoicism does indicate a senior role in erosion inactivity hindrance, eventually ascribconducive to the complexities of the order, it is considerable to apprehend the synergies among the issue of the inactivity factor as courteous as the issue of the erosion factor suitableness selecting a representative ce portraiture in the impression. It is referable attributconducive attributconducive attributconducive as unblended as scarcely selecting a harder, taller mixed and over high-priced representative, as it has been plant that in regular impressions the seemingly ‘inferior’ representative is ameliotrounce available ce the impression.
Bayer, RG (2004) Engineering Design ce Groove, 2nd edn, Marcel Dekker, New York.
Tang, P, Yang, J, Zheng, JY, Lam, CK, Wong, I & He, SZ (2009) Predicting Erosion-Inactivity Induced by the Interactions Among Multiphase Issue and Structure in Piping Order, Journal of Pressure Vessel Technology, vol. 131, 061301, p.1-8
Schweitzer PA (2010) Fundamentals of inactivity, agencys, agents, and obviateative methods, CRC Press, Boca Raton, Florida.
Erosion-inactivity (1995-2007) Inactivity criterioning laboratories Inc., Delaware, viewed 3 April 2010, http://www.corrosionlab.com/papers/erosion-corrosion/erosion-corrosion.htm
Inactivity 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) Unpremeditatedshore Cathodic Safety 101 What it is, and how it works,
Deepinfiltreprimand Inactivity Services inc., Houston, viewed 4 April 2010, www.cathodicprotection101.com/
Cathodic Safety, Sasol, South Africa, viewed 4 April 2010, www.sasol.com/sasol_internet/downloads/Cathodic_Protection_1164879179216.pdf
Inactivity Demands (2007) Metallurgical Consultants, Florida, viewed 17 April 2010, http://www.materialsengineer.com/CA-corrosion.htm
Tverberg, J (2008) ‘how to terminate inactivity hindrance’, Plymouth Tube Co., Illinois, accessed 17 April 2010, http://www.youtube.com/watch?v=txL3GIqNzzU
Hammond, R (2009) ‘Sydney opera unpremeditatedspring’, National Geographic record, DSTV, South Africa, viewed 27 March 2010.
Inactivity Control, Inactivity Technology Laboratory, Florida, viewed 17 April 2010 http://corrosion.ksc.nasa.gov/corr_control.htm
Sacrificial Anodes ce Cathodic Safety (2010) Deepinfiltreprimand Inactivity Services Inc., Houston, viewed 16 April 2010, http://www.stoprust.com/sacrificial-anodes.htm
Prevention of quickness issues – erosion inactivity and cavitation, Canadian copper and barefacedness educement conjunction, Canada, viewed 18 April 2010,
Tian, HH, Addie, GR & Visintainer, RJ (2009) ‘Erosion-inactivity work of tall-Cr manner sturdy totaloys in issueing running – weighty slurries’, Groove, vol. 267 (2009), p. 2039-2047.
Yaer, X, Shimizu, K, Matsumoto, H, Kitsudo, T & Momono, T (2007) Erosive groove characteristics of spheroidal carbides manner sturdy, Groove 264 (2008), p. 947-957.
Rajahram, SS, Harvey, TJ & Wood, RJK (2009) Erosion-inactivity hindrance of engineering representatives in several criterion stipulations, Groove 267, p. 244-254.
Balasubramanian, V, Varahamoorthy, R, Ramachandran, CS & Babu, S (2008) Abrasive slurry groove behaviour of snowy steel manner executed by plasma removered arc hardfacing course, Manner & Coatings Technology, 202, p. 3903-3912.
Neville, A & Wang, C (2009) Erosion-inactivity subjection by inactivity inhibitors – An impost of agencys, Groove 267, p. 195-203.
Turrene, S, Fiset, M & Masounave J (1989) The issue of sand eagerness on the erosion of representatives by a slurry jet, Groove 133, pp. 95-106 quoted in Rajahram, SS, Harvey, TJ & Wood, RJK (2009) Erosion-inactivity hindrance of engineering representatives in several criterion stipulations, Groove 267, p. 244-254.
Hu, X & Neville, A (2003) The electrochemical rejoinder of snowy steels in running-weighty impression, Groove 258, pp. 641-648.
Askeland, DR & Phule, PP (2005) The experience and engineering of representatives, 5th edn, Thomson Learning, Australia, p. 821-826.
Meyers, JR (2005) Copper-Tube Inactivity in Domestic-Infiltreprimand Orders, Heating/Piping/Essence Conditioning HPAC Engineering; Jun2005 Supplement, p22-31.
Jethra, R (2007) Steam Generation and Running Anatomy, Power Engineering, November 2007, p. 152-160.
Gutzwiller, L (2008) No1 coercionm to elude catastrophic demand, Pollution Engineering July 2008, p.28-37.
MEC3203 MATERIALS TECHNOLOGY ASSIGNMENT 1 S1, 2018 6
Impost criteria ce MEC3203 Enactment 1 (100 marks)
Plane 1 0-40 or thin violate
at with no evaluation and construction of con-over, or illmatched con-aggravate inquiry Plane 2 40-60 Adequate violate at explaining the gratified except demonstrating scant evaluation and
construction of some
con-aggravate Plane 3 60-80 Cheerful violate at demonstrating some manifestation of evaluation and construction of most required con-aggravate Plane 4 80-100
Excellent violate at demonstrating manifestation of evaluation and construction total required con-over
Assessment No: 1 Internal X External This assignment carries 10% of the total assessment for this course
Impost No: 1 Interior