MARC details
| 000 -LEADER |
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| fixed length control field |
03262nam a22003257a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
OSt |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250716140636.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250716b |||||||| |||| 00| 0 eng d |
| 040 ## - CATALOGING SOURCE |
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| Original cataloging agency |
TUPM |
| Language of cataloging |
English |
| Transcribing agency |
TUPM |
| Modifying agency |
TUPM |
| Description conventions |
rda |
| 050 ## - LIBRARY OF CONGRESS CALL NUMBER |
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| Classification number |
BTH TK 870 |
| Item number |
C38 2025 |
| 100 ## - MAIN ENTRY--PERSONAL NAME |
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| Personal name |
Canta, Maria Jeriah V. |
| Relator term |
author |
| 245 ## - TITLE STATEMENT |
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| Title |
Petr: |
| Remainder of title |
automated polyethylene terephthalate (pet) recycler pultrusion machine with a diameter consistency pid control system using computer vision/ |
| Statement of responsibility, etc. |
Maria Jeriah V. Canta, Jessie F. Logrono, Lieneth A. Maylas, Cherie Ann C. Nelmida, and Vince Elrey O. Tolledo.-- |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. |
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| Place of publication, distribution, etc. |
Manila: |
| Name of publisher, distributor, etc. |
Technological University of the Philippines, |
| Date of publication, distribution, etc. |
2025. |
| 300 ## - PHYSICAL DESCRIPTION |
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| Extent |
xi, 168pages: |
| Dimensions |
29cm. |
| 336 ## - CONTENT TYPE |
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| Source |
rdacontent |
| 337 ## - MEDIA TYPE |
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| Source |
rdamedia |
| 338 ## - CARRIER TYPE |
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| Source |
rdacarrier |
| 500 ## - GENERAL NOTE |
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| General note |
Bachelor's thesis<br/> |
| 502 ## - DISSERTATION NOTE |
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| Dissertation note |
College Of Engineering.--<br/> |
| Degree type |
Bachelor of science in electronics engineering: |
| Name of granting institution |
Technological University of the Philippines, <br/> |
| Year degree granted |
2025. |
| 504 ## - BIBLIOGRAPHY, ETC. NOTE |
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| Bibliography, etc. note |
Includes bibliographic references and index. |
| 520 ## - SUMMARY, ETC. |
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| Summary, etc. |
The rapid rise in plastic production poses a serious threat to aquatic ecosystems, with an<br/>estimated 13 to 19 million metric tons of plastic entering water bodies each year. Asia<br/>alone contributes approximately 82 million tons of plastic waste, making it the largest<br/>source of global plastic pollution. As the demand for sustainable materials in 3D printing<br/>continues to grow, there is an urgent need to develop methods for converting plastic<br/>waste into alternative filament sources. This study addresses that need by designing and<br/>building a 3D printer filament pultrusion machine that features automation and real-time<br/>monitoring. The system uses PID control through an Arduino Uno R4 microcontroller to<br/>regulate the stepper motor, heating nozzle, and spooling mechanism, which all work<br/>together to produce consistently wound PET filament. In addition, a computer vision<br/>system using machine learning was set up on a Raspberry Pi 5 to monitor filament<br/>diameter in real time. The goal was to maintain a consistent 1.75 mm diameter, with an<br/>acceptable 5% margin of error (1.66mm to 1.84mm). YOLOv8 was used instead of Mask<br/>R-CNN because it worked faster and more efficiently on the Raspberry Pi. To measure<br/>the filament, OpenCV was used, offering a more affordable method compared to laser<br/>systems. The tests used Nature Spring 1-liter PET bottles, cut into strips with widths<br/>between 9.0 mm to 9.6 mm and a thickness of 0.2 mm. It was found that the width and<br/>thickness of the strip had an effect on whether the filament could consistently reach the<br/>target diameter. Consequently, to check the quality of the filament, a pendulum impact<br/>test was done, along with test prints using a 3D printer. Measurements from the computer<br/>vision system were compared with results from a caliper, and had an accuracy of 98.73%.<br/>This project shows how waste PET bottles can be turned into usable 3D printing filament. |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Plastic production |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Aquatic ecosystems |
| 650 ## - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
Filament machine |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Logrono, Jessie F. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Maylas, Lieneth A. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Nelmida, Cherie Ann C. |
| Relator term |
author |
| 700 ## - ADDED ENTRY--PERSONAL NAME |
|---|
| Personal name |
Tolledo, Vince Elrey O. |
| Relator term |
author |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Library of Congress Classification |
| Koha item type |
Bachelor's Thesis COE |
| Suppress in OPAC |
No |