Influence of build orientation on porosity, strength and dimensional accuracy of laser sintered polyamide porous bone scaffolds

• Autorzy: Gorana Falguni , Modi Yashwant Kumar

Identyfikatory

DOI

10.24425/ame.2024.149639

• Języki publikacji: EN

Abstrakty

EN

Development of synthetic bone graft via bone tissue engineering involves seeding of patient’s stem cells onto a porous scaffold in presence of growth factors. Porosity, strength and dimensional accuracy of the porous scaffold play a vital role in this process. This work aims at ascertaining influence of build orientation on porosity, mechanical strength and dimensional accuracy of the selectively laser sintered polyamide porous scaffolds. Initially, CAD models of test specimens with pre-designed porosity were created in Solidworks® software. All the specimens were fabricated on EOSINT P395, a selective laser sintering machine, along various primary (Flat, Edge, Upright and Flat_diag) and secondary (0◦, 30◦, 45◦, 60◦ and 90◦) orientations. Results show that measured porosity of most of the specimens was (range: 42.89–35.26%) less than the designed porosity (41.71%). Maximum average tensile strength (16.84 MPa) was recorded for specimens printed along Flat_0◦ orientation. Specimens printed along Upright_90◦ orientation showed highest average compressive strength (8.26 MPa). Specimens printed along Flat orientation showed relatively better average impact strength. Best dimensional accuracy was obtained for specimens printed along Flat orientation.

Słowa kluczowe

EN

build orientation; compressive strength; impact strength; PA2200; porous bone scaffold; selective laser sintering

PL

orientacja budowli; wytrzymałość na ściskanie; wytrzymałość na uderzenia; PA2200; porowate rusztowanie kostne; selektywne spiekanie laserowe

• Wydawca: Komitet Budowy Maszyn PAN
• Czasopismo: Archive of Mechanical Engineering
• Rocznik: 2024
• Tom: LXXI, nr 2
• Strony: 227--249
• Opis fizyczny: Bibliogr. 44 poz., rys., tab.

Twórcy

autor

Gorana Falguni

• Department of Mechanical Engineering, Jaypee University of Engineering and Technology, Guna, MP, India

• https://orcid.org/0000-0002-3743-0165

autor

Modi Yashwant Kumar

• Department of Mechanical Engineering, Jaypee University of Engineering and Technology, Guna, MP, India

• https://orcid.org/0000-0002-6920-7283

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).