Elastic recovery effect on vickers microhardness of hard coatings by Perpustakaan UGM, i-lib

“…ABSTRACT It has been commonly assumed that there is no elastic recovery in the Vickers indent diagonal on unloading and Vickers microhardness is load independent. …”

Penentuan Sifat-Sifat Mekanis Laser Coatings Dan Laser Surface lloys Dengan Metode Indentasi Micro Vickers by Perpustakaan UGM, i-lib

“…Mechanical properties of surface layers (laser coatings and laser surface alloys) have been investigated by Vickers microindentation method, whereby a hard diamond indenter is pressed into the solid specimen surface. …”

Pengaruh Kandungan Serbuk Alumina Terhadap Kekerasan Dan Kekuatan Bending Komposit Paduan Al-Si/Alumina by Perpustakaan UGM, i-lib

“…The composites contain alumina greater than 6 %weight exhibit decrease in Vickers hardness and bending strength. Keywords: alumina, aluminum, bending strength, composites, Vickers hardness…”

Mechanical properties of aluminium/fly ash composites produced by hot extrusion by Subarmono, Subarmono, Jamasri, Jamasri, Wildan, M. Wasiz, Kusnanto, Kusnanto

“…The green body was hot extruded with an extrusion ratio of 0,25 andtemperature of 600°C. Bending strength, Vickers hardness, wear rate and porosity of the AMC/fly ash were measured. …”
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PENGARUH PENAMBAHAN CARBON (C) PADA BAJA PADUAN RENDAH 41xx TERHADAP SIFAT FISIS DAN MEKANIS by Setyana, Lilik Dwi, Tarmono, Tarmono

“…Tests were done to observe the microstructure and mechanical properties of the specimens including Vickers hardness and tensile strength. Results show that for 0,29 wt % to 0,4 wt % C, Vickers hardness and tensile strength increase (as cast specimens: 230 to 333 VHN and 67 to 84 kg/mm2, after normalizing-tempering : 295 to 351 VHN and 80 to 98 kg/mm2). …”
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Pemanfaatan Limbah Abu Terbang Sebagai Penguat Aluminium Matrix Composite by Subarmono, Subarmono, Jamasri, Jamasri, Wildan, M. Waziz, Kusnanto, Kusnanto

“…Kekuatan banding, kekerasan Vickers, ketahanan aus dan densitas komposit diuji serta struktur mikro diamati menggunakan SEM. …”

Effects sintering temperature on mechanical properties of aluminium 5% Fly ash composite produced using hot pressing by Subarmono, Subarmono, Jamasri, Jamasri, Wildan, M. Waziz, Kusnanto, Kusnanto

“…The results show that the bending strength, Vickers hardness and wear resistance increase with increasing sintering temperature up to 50°C. …”
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UTILIZATION OF FLYASH WASTE AS REINFORCEMENT OF ALUMINUM MATRIX COMPOSITE PRODUCED USING POWDER METALLURGY (Pemanfaatan Limbah Abu Terbang sebagai Penguat Aluminium Metal Matrix Co... by Perpustakaan UGM, i-lib

“…The bending strength and Vickers hardness of AMC increase, wear rate and porosity of AMC decrease with increasing the fly ash content up to 7.5 wt%, while fly ash higher than 7.5 wt% causes a decrease. …”

Utilization of fly ash waste as reinforcement of aluminium matrix composite produced using powder metallurgy (Pemanfaatan Limbah abu terbang sebagai penguat aluminium metal matrix... by Subarmono, Subarmono, Jamasri, Jamasri, Wildan, M. Waziz, Kusnanto, Kusnanto

“…Bending strength of AMC was determined using four point bending, hardness was tested using Vickers method, wear rate was tested using pin on disk method. …”
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PENGARUH IMPLANTASI ION TITANIUM TERHADAP KEKERASAN DAN KETAHANAN KOROSI STAINLESS STEEL 304 by , Diah astuti Indarwati,S.Si, , Dr. Eng. Priyo Tri Iswanto, ST., M.Eng.

“…In this condition, the Vickers Hardness Number was (268,33 20,27) VHN, an increase of 93,50 % compared with that of the unimplanted condition. …”

Pengaruh Fraksi Berat Zirconia Terhadap Sifat Fisik dan Mekanik Komposit Matrik Alumunium Diperkuat dengan Keramik Zirconia Yang Dibuat dengan Metode Metalurgi Serbuk by , BAYU SATRIYA WARDHANA, , Ir. M. Waziz Wildan, M.Sc, Ph.D.

“…They were pressure less sintered in argon atmosphere at temperature of 600ºC. Relative density, Vickers hardness, wear resistance and bending strength of the AMC were tested. …”

Pengaruh Penambahan Partikel Nikel Terhadap Swat Fisis Dan Mekanis Alumina Yang Mengandung 20% Berat Silika by Perpustakaan UGM, i-lib

“…Hardness of these samples was measured using Vickers hardness test with a load of 153.2 N and the results showed that the Vickers hardness decreased from 824 MPa (0% volume nickel) to 540 MPa (15% volume nickel). …”

Pengaruh beban torsi berlebih terhadap kelelahan baja poros by Perpustakaan UGM, i-lib

“…Mechanical properties tests performed on the material showed that the Vickers hardness is 183 kg/mm2 and the ultimate strength is 547 â�� 578 MPa. …”

Karakterisasi Fisis Dan Mekanis Interface Zone Dari Laser Coatings Cu-Ni-Fe-Si-B Dan Ni-Cr-B-Si by Perpustakaan UGM, i-lib

“…Interface zone properties of Cu-Ni-Fe-Si-B and Ni-Cr-B-Si laser coatings have been investigated by Vickers and Hertzian microindentation method, whereby a hard pyramid or spherical indenter is pressed into the solid specimen surface. …”

PEMANFAATAN SKRAP PADUAN Al�31,2%Mg UNTUK PROTOTIPE ONDERDIL SEPEDA MENGGUNAKAN PENGECORAN TUANG by , TRI MARDIYANA RIYANTA, S.E., , Dr. Suyitno, ST., M.Sc.

“…Testing equipment used were digital scales, Vickers hardness tester, optical microscope and Impact Charpy. …”

Pemanfaatan Pohon Bakau Sera Ai Nildia Karburising Untuk meningkatkan sifat mekanis baja karbon rendah by Perpustakaan UGM, i-lib

“…Properties changes were examined by micro vickers hardness pn the _specimen's surface, case depth Measurements and microstructure observations. …”

PENGARUH KUAT ARUS TERHADAP KEKERASAN, STRUKTUR MIKRO DAN LAJU KOROSI LAPISAN CHROMATE COATING PADA LOGAM ALUMINIUM by , BAMBANG HARI PRIYAMBODO, , Dr. Ir. Viktor Malau, DEA

“…Corrosion rate was tested using three-electrode cell method with 0.3% NaCl solution. Micro Vickers indentation was used for measuring surface hardness using load of 10 grams. …”

ANALISA STRUKTUR MIKRO DAN KEKERASAN CIRCULAR SAW MS CUTTING by , WISNU FREDIANTO, , Ir. Andr. Surjaka, Isp, MT.

“…The next step is using Heat Treatment to change the micro structure in Circular Saw, after that we need to do some hardeness testing using Vickers method to find out how hard Circular Saw is, before and after we admit that test. …”

PERBEDAAN KEKERASAN MIKRO PERMUKAAN RESIN KOMPOSIT MIKROFIL DAN NANOFIL PADAPENGGUNAAN BAHAN KARBAMID PEROKSIDA45% DAN HIDROGEN PEROKSIDA38%> SECARAIN OFFICEBLEACHING (Penelitian E... by Perpustakaan UGM, i-lib

“…Kekerasan mikro permukaan resin komposit terhadap bahan bleaching diuji menggunakan alat uji Vickers dan hasilnya dibandingkan menggunakan analisis varian dua jalur. …”

PENGARUH IMPLANTASI ION KHROM TERHADAP KEKERASAN, STRUKTUR MIKRO, DAN LAJU KOROSI DALAM MEDIA CAIRAN PBS PADA BAJA STAINLESS STEEL AISI 316 L by , Bangun Pribadi, , Dr. Eng. Priyo Tri Iswanto, ST, M. Eng.

“…Hardness surface for implanted and unimplanted samples were tested using micro vickers hardness. Corrosion test in PBS solution was carried out using three cell electrodes. …”