Karakterizacija dinamične piezoupornosti struktur izdelanih z metodo ciljnega nalaganja

doktorsko delo

Matic Arh (Author), Janko Slavič (Mentor), Miha Boltežar (Co-mentor)

Abstract

Ciljno nalaganje kot eno izmed bolj dostopnih aditivnih tehnologij je že bilo uporabljeno za izdelavo piezoupornih statičnih/kvazistatičnih zaznaval deformacij, zračnih tokov, sile. Nedavne raziskave so pokazale, da bi bilo mogoče ciljno nalaganje uporabiti za izdelavo dinamičnih zaznaval. Zaradi vpliva številnih procesnih parametrov, nehomogenosti struktur, izdelanih s ciljnim nalaganjem, anizotropije in nizke ločljivosti tehnologije, je izdelava dinamičnih zaznaval trenutno omejena. V doktorskem delu je obravnavana dinamična piezoupornost s ciljnim nalaganjem izdelanih struktur z vidika kontinuuma. Zasnovana je eksperimentalna metoda za določitev dinamičnih koeficientov piezoupornosti, koeficienti pa so nato eksperimentalno določeni. Na podlagi pridobljenih informacij o piezoupornosti so nato definirani konstrukcijski principi za izdelavo piezoupornega pospeškomera izdelanega s ciljnim nalaganjem. S pomočjo konstrukcijskih principov je izdelan prototipni pospeškomer z majhnimi gabaritnimi merami, nizko križno občutljivostjo in 0-425\,Hz uporabnim frekvenčnim področjem.

Keywords

disertacije;piezoupornost;pospeškomer;ciljno nalaganje;aditivne tehnologije;dinamična zaznavala;3D printanje;

Data

Language:	Slovenian
Year of publishing:	2021
Typology:	2.08 - Doctoral Dissertation
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[M. Arh]
UDC:	537.311.3:004.925.84:621.79(043.3)
COBISS:	79680003
Views:	497
Downloads:	104
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	The Characterisation of the Dynamic Piezoresistivity of Structures Manufactured by Fused Deposit Modelling
Secondary abstract:	Fused filament fabrication, one of the most accessible additive manufacturing technology, has already been used to manufacture piezoresistive static/quasistatic strain sensors, force sensors and wind sensors. Recent research showed that fused filament fabrication could also be used for the manufacturing of dynamic sensors. However, the manufacturing of the dynamic sensors is currently limited due to the anisotropic mechanical and piezoresistive behaviour, the heterogeneity, the large number of process parameters and poor resolution of the fused filament fabrication technology. In the thesis dynamic piezoresistivity of fused filament fabricated structures is researched. Fused filament fabricated structures are treated as a continuum. An experimental method for the identification of dynamic piezoresistive coefficients is proposed. Piezoresistive coefficients are then determined using the proposed method. Acquiered knowledge about the piezoresistive behaviour of fused filament fabricated structures is adopted to define design principles for piezoresistive accelerometer. Prototype accelerometer based on the defined principles is manufactured. Prototype accelerometer has low cross-axis sensitivity, 0-425\,Hz useful frequency range and is low in size.
Secondary keywords:	dissertations;piezoresistivity;accelerometer;fused filament fabrication;additive manufacturing;dynamic sensors;3D printing;
Type (COBISS):	Doctoral dissertation
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XXVIII, 116 str.
ID:	13582401