average roughness
[ˈævərɪdʒ ˈrʌfnəs]
nounpl: average roughnesses
rugosidade média
1. A quantitative measure of the texture of a surface, representing the arithmetic mean of the absolute deviations of surface heights from a reference line; commonly denoted as Ra in technical specifications.
The average roughness of the machined part was measured at 1.6 micrometers.
A rugosidade média da peça usinada foi medida em 1,6 micrômetros.
2. In metrology and quality control, a standard parameter used to specify surface finish requirements on engineering drawings and manufacturing specifications.
The specification requires an average roughness of Ra 0.8 μm for this precision component.
A especificação exige uma rugosidade média de Ra 0,8 μm para este componente de precisão.
This is a specialized technical term predominantly used in engineering, manufacturing, and quality control industries in both Brazil and the United States. It is essential in automotive, aerospace, and precision machinery manufacturing. In Brazil, the term 'rugosidade média' is standardized in technical documents and ISO/ABNT standards. The measurement is critical for ensuring product quality and interchangeability in industrial production.
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