dÃ¼ÅÃ¼k mukavemetli malzemeler iÃ§in mekanik deneylerin ...

More documents

Recommendations

Info

vABSTRACTDESIGN AND CONSTRUCTION OF TABLETOP TESTING MACHINE FORMECHANICAL TESTING OF LOW-STRENGTH MATERIALSTension/compression test is one of the most common testing methods whichis used to determine the mechanical properties of metallic and non-metallicmaterials. Brand-name testing machines which are available in the market such asInstron and MTS are sold for a price starting from 50,000 USD depending on theircapacities and specifications. In this study, a tabletop testing machine was designedwith enough capacity and specifications for tension/compression/bending tests oflow-strength materials at much lower cost compared to the brand-name machines(approximately one fifth). The frame of the testing machine was manufactured usingsome of the conventional machining methods. A steel material block at sufficientdimensions for machining was purchased and machined to the final dimensions usinga milling machine and some other tools such as cutting and measuring tools.After machining the frame, a hydraulic/pneumatic system was designed toobtain the required load and to have a range of loading rate that can be adjusted fortension/compression/bending tests. The required parts for the hydraulic/pneumaticsystem were purchased and installed on the frame. Then, the whole testing systemwas tested to check if anything needs to be corrected and made sure that it is readyfor further testing of low-strength materials.The custom-made tabletop testing machine provides 10 kN load maximumfor tension/compression/bending tests of low-strength materials and allows the userto adjust the loading rate.Since the tabletop testing machine will be used in biomechanics laboratory,the testing machine was tested both for tension and compression using samplesprepared from bovine bone. So, the testing machine was controlled whether it worksas desired or not. The problems that were faced during its operation were studied tofind the reasons and their solutions, then, they were corrected with minormodifications on the testing system. The results of bovine bone testing werecompared to the mechanical properties reported previously in the literature.
viKEY WORDS: Tension, Compression, Bending, Mechanical Testing Methods,Mechanical Properties
Page 1 and 2: DÜŞÜK MUKAVEMETLİ MALZEMELER İ
Page 3 and 4: Fen Bilimleri Enstitüsü Müdürl
Page 5 and 6: ii3.2.5. Hidrolik Valfler3.2.5.1. V
Page 7: ivedilmiş ve ortaya çıkan aksakl
Page 12 and 13: ixŞEKİLLER DİZİNİŞekil 1.1.Ş
Page 14 and 15: xiÇİZELGELER DİZİNİÇizelge 1.
Page 16 and 17: 2Malzemelerin özellikleri hem malz
Page 18 and 19: 4Şekil 1.1. Metalik bir malzeme i
Page 20 and 21: 6Aygıtsal faktörler: Deney cihaz
Page 22 and 23: 8numunenin başlangıçtaki kesit a
Page 25 and 26: 111.2.9. Yüzde Kesit Alan Daralmas
Page 27 and 28: 13bağlı olarak 50,000 Amerikan Do
Page 29 and 30: 15olsun bütün deney cihazları; k
Page 31 and 32: 17Çizelge 2.2. Basma deneylerinden
Page 33 and 34: 19PARÇA LISTESI67SIRA12345678910TA
Page 35 and 36: 21üzerinde istenilen kuvvetin uygu
Page 37 and 38: 23dar bir kullanım alanı bulunmak
Page 39 and 40: 259. Hidrolik sistemin bakımı ve
Page 41 and 42: 27Hidrolik akışkanın nereye ve n
Page 43 and 44: 29Şekil 3.8. Tüplü manometrenin
Page 45 and 46: 314. Normal çalışma basıncı 6-
Page 47 and 48: 33Şekil 3.10. Deney cihazında kul
Page 49 and 50: 35kullanılırlar. Özellikle bası
Page 51 and 52: 37payı bırakılır. Devir hızın
Page 53 and 54: 39Şekil 3.18. Üst tablanın bitmi
Page 55 and 56: 41işlenir. Parçanın ölçülerin
Page 57 and 58: 43a. Deney cihazına monte edilmemi
Page 59 and 60:
45Şekil 3.27. Çekme deneyinde kul
Page 61 and 62:
47serbestisi olan flanş vasıtası
Page 63 and 64:
494. BULGULARBu çalışmada tasar
Page 65 and 66:
51Gerilme-gerinme eğrisinin ilk 25
Page 67 and 68:
53Basma deneyine tabi tutulan malze
Page 69 and 70:
555. TARTIŞMA VE SONUÇÇekme ve b
Page 71 and 72:
57Martin, R.B., Burr, D.B., and Sha
show all

dÃ¼ÅÃ¼k mukavemetli malzemeler iÃ§in mekanik deneylerin ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?

dÃ¼ÅÃ¼k mukavemetli malzemeler iÃ§in mekanik deneylerin ...