Publicação
Influence of measurement length in yarn eveness control
| Resumo: | In order to be able to quantify yarn evenness, most of the testing instruments use the principle based on drawing the yarn under test between the plates of a condenser, so that the yarn and the air are the dielectric material that changes the capacitor characteristics, which is proportional to the mass of small lengths of the yarn (8mm). A mathematical study was made in order determine the yarn evenness in multiples of 1mm length in the range of 1 to 8mm. To analyse the influence of measurements lengths in the determination of yarn evenness, a statistical study was carried out. The results show that the ones obtained in 1mm length statistically influence the yarn mass variation. |
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| Autores principais: | Soares, Filomena |
| Outros Autores: | Monteiro, João L.; Vasconcelos, Rosa |
| Assunto: | Yarn regularity Evenness Control Statistical analysis Engenharia e Tecnologia::Outras Engenharias e Tecnologias |
| Ano: | 2001 |
| País: | Portugal |
| Tipo de documento: | comunicação em conferência |
| Tipo de acesso: | acesso aberto |
| Instituição associada: | Universidade do Minho |
| Idioma: | inglês |
| Origem: | RepositóriUM - Universidade do Minho |
| Resumo: | In order to be able to quantify yarn evenness, most of the testing instruments use the principle based on drawing the yarn under test between the plates of a condenser, so that the yarn and the air are the dielectric material that changes the capacitor characteristics, which is proportional to the mass of small lengths of the yarn (8mm). A mathematical study was made in order determine the yarn evenness in multiples of 1mm length in the range of 1 to 8mm. To analyse the influence of measurements lengths in the determination of yarn evenness, a statistical study was carried out. The results show that the ones obtained in 1mm length statistically influence the yarn mass variation. |
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