ACTA TECHNICA CORVINIENSIS - Bulletin of Engineering

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ACTA TECHNICA CORVINIENSIS – BULLETIN of ENGINEERINGmost probably application in packaging field,where goods are using (are performing function)only for some days and after it is problem“WHAT WITH THEM”? This problem in case of PEand PP materials is very complicated and nevercould not be absolutely solved. Biodegradableplastics advantage in this case is obvious. Due totheir comfortable (for unpretentiousapplications as packaging etc.) properties canperform plastic part function without anyproblem and after end of part life cycle (whereconventional petrolic polymers becomesproblem) is able to resolve to nature componentwithout any “ecologic print”. In next studies willbe observated technological parametersinfluence to degradation behavior of thematerial HL-103. Because of relatively high priceof this material, next studies will be also focusedto price decreasing possibilities. The simplestway is to fill this basic material with anotherbiodegradable material which is much cheaperthan basic polymeric material. For example itcould be wood powder. It is question, how canthis filler affect mechanical properties andproperties during biodegradation. Probablywood powder will decrease mechanicalproperties of specimen made of compound HL-103 and wood powder, but on other side will bedecreased time of complete degradation. Rate ofthese influences is of course in volumepercentage of added wood powder. And this isthe question will be solved in next studies, wherewill be used various wood powder percentagesin basic HL-103 and similar propertiesobservated in this study will be observated foreach compound.AUTHOR & AFFILIATION1.JIŘÍ BOBEK1. KATEDRA STROJÍRENSKÉ TECHNOLOGIE, ODDĚLENÍ TVÁŘENÍKOVŮ A PLASTŮ, TECHNICKÁ UNIVERZITA V LIBERCI, CZECHREPUBLICREFERENCES[1] ČSN EN ISO 527-1,2 (640604). Plasty – Stanovenítahových vlastností. Praha: ČNI Praha, 2003.[2] ČS N EN ISO 178 (640607). Plasty – Stanoveniohybových vlastností. Praha: ČNI Praha, 2003.[3] ČSN EN ISO 180 (640604). Plasty – Stanovenírázové houževnatosti metodou Izod. Praha: ČNIPraha, 2001.[4] ČSN EN ISO 868 (640624). Plasty a ebonit –Stanovení tvrdosti vtlačováním hrotutvrdoměru (tvrdost Shore). Praha: ČNI Praha,2003ACTA TECHNICA CORVINIENSIS– BULLETIN of ENGINEERINGISSN: 2067-3809 [CD-Rom, online]copyright ©University Politehnica Timisoara,Faculty of Engineering Hunedoara,5, Revolutiei,331128, Hunedoara,ROMANIAhttp://acta.fih.upt.ro242010/Fascicule 2/AprilJune /Tome III
1.TADEUSZ ZABOROWSKIANALYSIS OF ENGINEERING MATERIALSSCIENCE FOR ADVANCES IN DESIGNFOR MANUFACTURING PROCESSESAbstract:This paper decribed role of materials selection for the design and manufacturing processes of new,needed products, having the highest attainable quality and performance at the optimum andreasonably set - possibly lowest cost level. The review of the long history of human civilisationindicates that the significant increase of the level of living and production is connected most oftenwith introduction of new material groups, having their properties adjusted better and better to thereal customers requirements that get more sophisticated nearly each day, and having also thetechnological processes relevant to them. The reasons given, make it possible to forecast that thefuture of the market and products on it, with the required properties, are inseparably connected withthe development of Engineering Materials.Keywords:design, engineering materials, production process, productINTRODUCTIONModern products could not be often designedand manufactured without employing manymaterials, just as that they could not operate inrequired service conditions and with therequired very high reliability. One has to realisethat the contemporary product is composed of ahost of elements made from materials varying agreat deal. As an example, the average car iscomposed of about 15,000 elements, whereasthe passenger aircraft has more than 4,000,000elements. Many people, even today, do theirwork at home, without leaving it. Houses willhave to be organised and furnished in a totallyother way within several years' time span.Towns, transportation and telecom systems willbe organised differently than nowadays. Townsand transport system will be organised inanother way, including novel urbantransportation systems connecting the sky-highbuildings, electrically powered cars, robotizedsafety systems and municipal wastes utilisationsystems. Health care system will be based ondiagnoses made at home, non-allergic nutrition,early detection of serious illnesses and theirprevention, and also on implanting of artificialorgans-heart, and of a new generation ofbiomaterials. Future agriculture, forestry and fishindustry will be based on genetic engineeringachievements, mastering fanning new plants,employing other processes than photosynthesis,and also comprehensive robotisation. Miningand manufacturing industries will be based on atotal robotisation of processes of industrial© copyright FACULTY of ENGINEERING – HUNEDOARA, ROMANIA 25
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