Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure
The acoustic features of old resonance wood in violins exhibit a superior quality when compared to those from new resonance wood. This study focuses on an assessment of the sound quality of two types of wood for musical instruments, spruce and maple (class A and D), before and after aging via therma...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/15/7/1794 |
| _version_ | 1797607111598800896 |
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| author | Lidia Gurău Maria Cristina Timar Camelia Coșereanu Mihaela Cosnita Mariana Domnica Stanciu |
| author_facet | Lidia Gurău Maria Cristina Timar Camelia Coșereanu Mihaela Cosnita Mariana Domnica Stanciu |
| author_sort | Lidia Gurău |
| collection | DOAJ |
| description | The acoustic features of old resonance wood in violins exhibit a superior quality when compared to those from new resonance wood. This study focuses on an assessment of the sound quality of two types of wood for musical instruments, spruce and maple (class A and D), before and after aging via thermal and UV exposure. The samples were characterized before and after UV aging in terms of color change (using a Chroma meter), surface morphology (using a MarSurf XT20 instrument), chemical changes (monitored by FTIR spectroscopy), and sound propagation speed (using an ultrasound device). After UV treatment, the wavier surface increased the area of exposure and degradation. Also, the color changes were found to be more accentuated in the case of spruce compared to sycamore maple. The FTIR results indicated more advanced aging processes for spruce when compared to maple under the same experimental conditions. This difference resulted mostly from the increased formation of carbonyl-containing chromophores via oxidative processes in spruce rather than in maple, which is in agreement with the color change findings. Exposure of both species to thermal and UV radiation led to an increase in sound propagation speed, both longitudinally and radially, and to a greater extent in wood quality class A when compared to quality class D. |
| first_indexed | 2024-03-11T05:26:37Z |
| format | Article |
| id | doaj.art-4bfba03e4d444dd688bbda1e34e4afbe |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-11T05:26:37Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-4bfba03e4d444dd688bbda1e34e4afbe2023-11-17T17:27:40ZengMDPI AGPolymers2073-43602023-04-01157179410.3390/polym15071794Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal ExposureLidia Gurău0Maria Cristina Timar1Camelia Coșereanu2Mihaela Cosnita3Mariana Domnica Stanciu4Faculty of Furniture Design and Wood Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaFaculty of Furniture Design and Wood Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaFaculty of Furniture Design and Wood Engineering, Transilvania University of Brasov, 500036 Brasov, RomaniaDepartment of Product Design Mechatronics and Environment, Transilvania University of Brasov, 29 Eroilor, 500036 Brasov, RomaniaFaculty of Mechanical Engineering, Transilvania University of Brașov, B-dul Eroilor 29, 500360 Brasov, RomaniaThe acoustic features of old resonance wood in violins exhibit a superior quality when compared to those from new resonance wood. This study focuses on an assessment of the sound quality of two types of wood for musical instruments, spruce and maple (class A and D), before and after aging via thermal and UV exposure. The samples were characterized before and after UV aging in terms of color change (using a Chroma meter), surface morphology (using a MarSurf XT20 instrument), chemical changes (monitored by FTIR spectroscopy), and sound propagation speed (using an ultrasound device). After UV treatment, the wavier surface increased the area of exposure and degradation. Also, the color changes were found to be more accentuated in the case of spruce compared to sycamore maple. The FTIR results indicated more advanced aging processes for spruce when compared to maple under the same experimental conditions. This difference resulted mostly from the increased formation of carbonyl-containing chromophores via oxidative processes in spruce rather than in maple, which is in agreement with the color change findings. Exposure of both species to thermal and UV radiation led to an increase in sound propagation speed, both longitudinally and radially, and to a greater extent in wood quality class A when compared to quality class D.https://www.mdpi.com/2073-4360/15/7/1794resonance woodacoustic qualitysound propagationUV agingcolor changeschemical changes |
| spellingShingle | Lidia Gurău Maria Cristina Timar Camelia Coșereanu Mihaela Cosnita Mariana Domnica Stanciu Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure Polymers resonance wood acoustic quality sound propagation UV aging color changes chemical changes |
| title | Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure |
| title_full | Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure |
| title_fullStr | Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure |
| title_full_unstemmed | Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure |
| title_short | Aging of Wood for Musical Instruments: Analysis of Changes in Color, Surface Morphology, Chemical, and Physical-Acoustical Properties during UV and Thermal Exposure |
| title_sort | aging of wood for musical instruments analysis of changes in color surface morphology chemical and physical acoustical properties during uv and thermal exposure |
| topic | resonance wood acoustic quality sound propagation UV aging color changes chemical changes |
| url | https://www.mdpi.com/2073-4360/15/7/1794 |
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