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1、FINALYEARDESIGNPROJECTOFMECHANICALENGINEERING2005/2006INVESTIGATIONOFCAUSESOFFALLINGDURINGWALKINGANDDESIGNOFRELEVANTTESTDEVICESGroupsize:5studentsSupervisor:ProfessorTongxiYU(Office:Room2570;Tel:23588652;e-mail:metxyu@ust.hk)Description:Accordingtothestatist
2、icsfromtheLaborDepartmentoftheHKASRGovernment,restaurantsaretheoccupationwiththeNo.2highestaccidentrateinHongKong(TheoccupationwiththeNo.1highestriskisconstruction).Amongthetotalabout10,000accidentsoccurredeachyearinHongKong’srestaurants,about1,400accidentsa
3、recausedbyslipping,trippingandfalling.Therefore,toreduceandavoidslip-and-fallduringwalkingisoneofmostcriticaloccupationalsafetyissues.TheobjectiveofthisFYDPistoinvestigatetechnicalmeasuressoastoreducetheslip-and-fallaccidentsoccurredinrestaurants’kitchensand
4、floors.Toachievethisobjective,theFYDPteamwillconductthefollowingtasks:(1)Tounderstandthemechanismsofwalker’sslip-and-fallduringwalkingonaflatfloororonaslope.Apartfromreviewingrelevantliterature,aWalkTestRig(WTR)willbedesigned,manufacturedandinstalled.Thistes
5、trigisabletomeasurethenormalforceandtangentialforceappliedonawalker’sfootwhilsthe(orshe)iswalkingatanormalpace,oratanacceleratedpace,orwithheavyloadonhands.Bycollectingandanalyzingthetestdata,theFYDPteamwillknowhowapersonmoveshis(orher)bodyandlegsduringwalki
6、ng,andknowwhatistheminimumcoefficientoffrictionrequiredforavoidingslippingduringwalking.(2)Topreciselymeasurethecoefficientoffrictionundertheworkingconditioninrestaurant’sfloororkitchen,aportablein-situFrictionTestDevice(FTD)willbedesigned,manufacturedandcal
7、ibrated.Arealshoe(neworworn)canbefixedonthetestdeviceandmadetoslipagainsttherealfloorsurfacesoastomeasurethecoefficientoffrictionbetweenthem.Variousfloorsurfacesunderadryconditionorbeingspoiledbywater,oilorwashingliquidwillbesystematicallytestedbyusingthisde
8、vicetosimulatetherealsituationinrestaurantsandtoassesstheriskofslippingandfalling.(3)Theanti-slippingblocksforpavingkitchen’sfloorandanti-slippingshoesforrestaurants’workerswillbeexperimentallys
