First Study on Fracture Toughness Testing of Silicon Nitride by Using Single Edge Precrack V-Notched Beam (SEPVNB).

(1)

(2)

First Study on Fracture Toughness Testing

of Silicon Nitride by Using Single Edge

Precrack V-Notched Beam (SEPVNB)

Montanuniversität Leoben,

Tjokorda Gde Tirta NINDHIA

Seminar Nasional Tahunan Teknik Mesin XIV (SNTTM XIV) Banjarmasin, Kalimantan Selatan, 7-8 October 2015

Montanuniversität Leoben, AUSTRIA

ASEA-UNINET Universitas Udayana

1st _{International Conference Material, manufacturing, Mechanical}

Engineering, Banjarmasin, Kalimantan Selatan, 7-8 October 2015 Tanja LUBE

(3)

(4)

Why in silicon nitride ?

(5)

(6)

(7)

Fracture toughness test methods

Will not discussed

here

Was developed as ISO standard ISO/FDIS 23146:2008(E)

Single Edge V-Notched Beam (SEVNB)

Single Edge Precrack V-Notched Beam (SEPVNB)

(8)

Experimental

The advanced ceramic that will be tested should be mounted on the ceramic tile by using glue. The glue is made from

(9)

(10)

(11)

• SEVNB, the fracture toughness conducted based on preparation of bar test pieces (the sharp-tipped notch is machined)

– Honing the test piece using reciprocating razor blade & diamond paste.

– Standard based valid condition: Notch-tip with radius range from1 µm – 20 µm, under well controlled condition.

(12)

Initial V-Notching Process by using diamond wheel

Sharpening the notch tip by using razor blade with

(13)

(14)

(15)

(16)

(17)

(18)

(19)

ACKNOWLEDGEMENTS

The author acknowledges:

1. o.Univ Prof. Dr. Robert Danzer, Assistance Prof. Dr. Tanja Lube and Mr. Ronald Binder of the Institute fur Structural und

Funktion keramik, Montanuniverssitat.

2. ASEA-UNINET

(20)