Fizikalni model laserskega odstranjevanja izolativnega laka z bakrene žice

zaključna naloga Univerzitetnega študijskega programa I. stopnje Strojništvo - Razvojno raziskovalni program

Tim Kankelj (Author), Matija Jezeršek (Mentor)

Abstract

Vse pogostejša uporaba električnih naprav na različnih področjih pomeni vse večjo uporabo električno prevodnih žic, ki so prevlečene z izolacijsko plastjo. Slednja mora pogosto biti pred spajanjem odstranjena. V industriji se za različne obdelovalne postopke vse pogosteje uveljavljajo laserski sistemi. Z njihovo pomočjo lahko tudi odstranimo izolativni sloj iz površine obdelovanca. V zaključnem delu smo zasnovali fizikalni model laserskega odstranjevanja izolativnega sloja, temelječega na prenosu toplote, preko polneskončnega telesa in ga na podlagi izvedenih eksperimentov, kjer smo osvetljevali čelno površino bakrene žice, postopoma prilagajali. Z opravljenimi eksperimenti smo ugotovili obratno sorazmernost parametrov laserske moči in trajanja bliska v kombinaciji z dolžino odstranjenega izolativnega premaza žice ter pridobili nadzor nad samim procesom. Natančnost fizikalnega modela smo validirali z izračunom standardne deviacije, ki je pri določanju trajanja laserskega bliska za pričetek pretaljevanja izolativnega sloja, znašala 14 ms, raztros koeficienta absorptivnosti je znašal 7,7 %, natančnost izračuna dolžine odstranjenega laka pa 0,40 mm.

Keywords

diplomske naloge;laserski sistem;bakrena žica;fizikalni model;izolativni premaz;prenos toplote;

Data

Language:	Slovenian
Year of publishing:	2021
Typology:	2.11 - Undergraduate Thesis
Organization:	UL FS - Faculty of Mechanical Engineering
Publisher:	[T. Kankelj]
UDC:	621.375.826:621.315.3(043.2)
COBISS:	84233219
Views:	577
Downloads:	88
Average score:	0 (0 votes)
Metadata:

Other data

Secondary language:	English
Secondary title:	Physical model of laser removal of insulating material from copper wire
Secondary abstract:	The increasing use of electrical devices in various areas results in higher demand of coil wires, which are coated with an insulating layer. Often insulation must be removed before welding. Laser systems are increasingly being used for different industrial purposes. In this work we designed a physical model of copper wire insulation removal process via semiinfinite body and gradually adjusted it based on the results of the experiments, where we illuminated the front surface of copper wire. With the experiments carried out, we found the inverse proportionality of the parameters of laser power and the duration of laser pulse in combination with the removed length of the wire insulation coating while simultaneously gaining control of the process itself. The accuracy of the physical model was validated by calculating multiple standard deviations, which were evaluated at 14 ms when determining the duration of the laser pulse for initiation of insulation layer melting, standard deviation for calculated coefficient of absorbtivity was 7.7 % and the accuracy of insulation removal length was 0,40 mm.
Secondary keywords:	thesis;laser system;copper wire;physical model;insulation coating;heat transfer;
Type (COBISS):	Final paper
Study programme:	0
Embargo end date (OpenAIRE):	1970-01-01
Thesis comment:	Univ. v Ljubljani, Fak. za strojništvo
Pages:	XV, 57 f.
ID:	13366714