doktorsko delo
Marko Peternelj (Avtor), Brane Širok (Mentor)

Povzetek

Doktorsko delo obravnava nastajanje ligamentov, vlaken, tvorjenje večjih skupkov vlaken in končno formiranje primarne plasti mineralne volne. Zaradi tehničnih omejitev spremljanja procesa sta bila v okviru doktorske naloge izvedena dva laboratorijska eksperimenta na modelni centrifugi in modelni zbiralni komori. Merilni metodi pri eksperimentih sta bili vizualizacija procesa s hitro kamero ter računalniška obdelava podatkov. Študija na modelni centrifugi je bila osredotočena na formiranje vlaken iz perforiranega rotorja ter njihovo medsebojno prepletanje v večje strukture. Rezultati študije so prikazani v obliki multiregresijskih modelov. Na modelni zbiralni komori smo razvili vizualizacijsko metodo določanja površinske gostote primarne plasti z metodo presvetlitve oz. absorpcije svetlobe skozi prosojni material. Ugotovili smo povezavo med obratovalnimi parametri in površinsko gostoto primarne plasti ter njeno teksturo. Povezavo smo kvantitativno formulirali v obliki multiregresijskega modela. Metodo presvetlitve primarne plasti za določitev površinske gostote smo nato uporabili v realnem industrijskem okolju, s tem pa omogočili kvantitativno vrednotenje vpliva obratovalnih parametrov na porazdelitev in teksturo formirane primarne plasti. Spoznanja v opravljenih študijah so privedla do oblikovanja nove tehnične rešitve - zbiralne komore, ki je patentno zaščitena.

Ključne besede

ligamenti;vlakna;večfazni tokovi;pnevmatski transport;primarna plast;centrifuga;zbiralna komora;vizualizacija s kamero;kamena volna;

Podatki

Jezik: Slovenski jezik
Leto izida:
Tipologija: 2.08 - Doktorska disertacija
Organizacija: UL FS - Fakulteta za strojništvo
Založnik: [M. Peternelj]
UDK: 004.9:666.198(043.3)
COBISS: 16098587 Povezava se bo odprla v novem oknu
Št. ogledov: 1344
Št. prenosov: 439
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Angleški jezik
Sekundarni naslov: Kinematics of mineral wool fibers in air flow
Sekundarni povzetek: In this thesis formation of ligament and fibers, formation of larger clusters of fibers and their further accumulation and formation of so called primary layer is investigated. Due to difficult measuring techniques in real industrial environment of the process, two laboratory experimental studies were conducted on model spinner and model collecting chamber. Measuring method was performed by means of visualization with high speed camera and computer analysis of the data. Study on model spinner was focused on formation of fibers generated by perforated rotor, their intertwining and formation of typical larger structures. Results were presented in form of multiple regression models. Study on model collecting chamber was conducted to develop measuring method for determining primary layer mass distribution. The principle of this method is absorption of light through fibrous material. Relation between operation parameters and primary layer mass distribution and its texture was found. This relation was quantitatively formulated in form of multiple regression models. Developed method for measuring mass distribution of accumulated fibers was then used in real industrial plant, where it enabled quantitative evaluation of primary layer characteristics and their relation to operating parameters. Better understanding of the process led to the design of new technical solution for the collecting chamber which is patent protected.
Sekundarne ključne besede: dissertations;mineral wool;ligaments;fibers;multiphase flow;pneumatic transport;primary layer;spinner;collecting chamber;computer added visualization;Mineralna volna;Disertacije;
Vrsta dela (COBISS): Doktorsko delo/naloga
Študijski program: 0
Konec prepovedi (OpenAIRE): 1970-01-01
Komentar na gradivo: Univ. v Ljubljani, Fak. za strojništvo
Strani: XX, [93] str.
ID: 10939930