Instrumented microindentation – a versatile technique in the field of wood science and technology

Petrič, Marko (avtor)

Hardness is an important mechanical property of wood or other wood-based materials and it is also very important in the case of wood coatings. Different indentation methods for measurements of hardness and other mechanical properties have been utilised already for a long time. In the last 50 years the instrumented indentation was developed. Here, an indenter tests the surface of a specimen with a controlled load and movement, in order to assess its mechanical properties. Three ranges of instrumented indentation tests are distinguished. In the macro range, the force is higher than 2 N, in the micro range it is below 2 N and the depth of indentation must exceed 0.2 μm. When the indentation depth is lower than 0.2 μm, the indentation technique is called nanoindentation. There can be found thousands of scientific papers about applications of instrumented nanoindentation in research of a large variety of materials. Instrumented microindentation remained somehow in the shadow of nanoindentation, but yet, it is a highly versatile technique with potentials to study various (micro)mechanical properties. In this review, examples of possible applications of instrumented microindentation are presented, with a focus on investigations of wood, wood-based composites, surface coated wood and polymeric films. In the second part of this paper, as an illustration, investigations of a self-healing wood paint are shown. The cyclic method and a single-load indentation confirmed the different mechanical properties and good scratch resistance of the self-healing paint.

• Jezik: Angleški jezik
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.08 - Objavljeni znanstveni prispevek na konferenci
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2023
• Št. strani: 13 str.
• Številčenje: Vol. 1298, [št. članka] 012008
• PID: 20.500.12556/RUL-153459
• UDK: 630*8
• ISSN pri članku: 1757-899X
• DOI: 10.1088/1757-899X/1298/1/012008
• COBISS.SI-ID: 179827971
• Datum objave v RUL: 08.01.2024

Gradivo je del revije

• Naslov: IOP conference series. Materials science and engineering
• Skrajšan naslov: IOP conf. ser., Mater. sci. eng.
• Založnik: IOP Publishing
• ISSN: 1757-899X
• COBISS.SI-ID: 1755733

Licence

• Licenca: CC BY 3.0, Creative Commons Priznanje avtorstva 3.0 Nedoločena
• Povezava: https://creativecommons.org/licenses/by/3.0/deed.sl
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Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: mikroindentacija, trdota, les, lesni kompoziti, samoobnovljivi premaz

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P4-0015-2020
• Naslov: Les in lignocelulozni kompoziti