BF, Dept. of Wood Technology, Lj. (BFLES)
-
Vpliv deleža zunanjega sloja trislojne iverne plošče na akustične lastnosti : diplomski projekt = Influence of surface layer share of a the three-layered particle board on its acoustic properties : B. Sc. thesisDežman, ŽigaUporabnost ivernih plošč kot tudi ostalih lesnih kompozitov je nadvse široka. Uporablja se jih lahko tako v pohištveni industriji kot tudi v gradbeništvu, kjer so poleg mehanskih in sorpcijskih ... pomembne tudi akustične lastnosti. Na akustične lastnosti vpliva predvsem gostota plošče, ki pa jo lahko spreminjamo z uporabo različnih lesnih vrst in tudi s spreminjanjem razmerja med zunanjim in srednjim slojem. Želeli smo ugotoviti, kako spreminjanje razmerja zunanji/srednji sloj vpliva na absorpcijo zvoka in kakšna je vloga posameznega sloja. V laboratorijskih pogojih smo izdelali 3 različne iverne plošče, ki so se razlikovale glede na delež srednjega sloja (30 %, 45 % ter 60 %). Meritve smo opravili s pomočjo REW V5 programa, ki je Java aplikacija za merjenje akustike in analizo prostorov ter zvočniških odzivov. Vključuje orodja za generiranje testnih signalov, merjenje SPL-a (Sound Pressure Level -raven zvočnega tlaka) in impedance, itd. Opravljene meritve so pokazale, da na absorpcijo zvoka v največji meri vpliva zunanji sloj, grajen iz finejših delcev oz. iveri; saj je specifična površina drobnih iveri večja od tiste z večjimi, ki se nahajajo v srednjem sloju 3-slojne plošče, in ima tako večjo zmožnost absorpcije zvoka. Ugotovili smo tudi, da je pri ploščah z večjim deležem srednjega sloja absorpcija zvoka višjih frekvenc višja kot pa pri ploščah z manjšim deležem zunanjega sloja.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [Ž. Dežman], 2012Language - slovenianCOBISS.SI-ID - 2056329
Author
Dežman, Žiga
Other authors
Medved, Sergej |
Gorišek, Željko
Topics
iverna plošča |
struktura |
delež sloja |
akustične lastnosti |
particle board |
structure |
layer share |
acoustic properties
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Call number – location, accession no. ... |
Copy status | Reservation |
---|---|---|
Knjižnica BF za lesarstvo dv1 0000000025 IN: 020120138 Knjižnica BF za lesarstvo dv1 25 IN: 020120138 |
available - reading room
|
![loading ... loading ...](themes/default/img/ajax-loading.gif)
![loading ... loading ...](themes/default/img/ajax-loading.gif)
![loading ... loading ...](themes/default/img/ajax-loading.gif)
Shelf entry
Permalink
- URL:
Impact factor
Access to the JCR database is permitted only to users from Slovenia. Your current IP address is not on the list of IP addresses with access permission, and authentication with the relevant AAI accout is required.
Year | Impact factor | Edition | Category | Classification | ||||
---|---|---|---|---|---|---|---|---|
JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Select the library membership card:
If the library membership card is not in the list,
add a new one.
DRS, in which the journal is indexed
Database name | Field | Year |
---|
Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
---|---|
Dežman, Žiga | ![]() |
Medved, Sergej | 15410 |
Gorišek, Željko | 05732 |
Source: Personal bibliographies
and: SICRIS
Select pickup location:
Material pickup by post
Delivery address:
Address is missing from the member's data.
The address retrieval service is currently unavailable, please try again.
By clicking the "OK" button, you will confirm the pickup location selected above and complete the reservation process.
By clicking the "OK" button, you will confirm the above pickup location and delivery address, and complete the reservation process.
By clicking the "OK" button, you will confirm the address selected above and complete the reservation process.
Notification
Automatic login and reservation service currently not available. You can reserve the material on the Biblos portal or try again here later.
Subject headings in COBISS General List of Subject Headings
Select pickup location
The material from the parent unit is free. If the material is delivered to the pickup location from another unit, the library may charge you for this service.
Pickup location | Material status | Reservation |
---|
Reservation in progress
Please wait a moment.
Reservation was successful.
Reservation failed.
Reservation...
Membership card:
Pickup location: