USE OF CONTROL CHARTS FOR MULTI-TEMPORAL ANALYSIS OF GEODETIC AUSCULTATION DATA FROM DAMS

• Autor(a) principal: QUINTANILHA, JOSÉ ALBERTO
• Data de Publicação: 2013
• Outros Autores: HO, LINDA LEE, MACHADO, CLÁUDIA APARECIDA SOARES, BLITZKOW, DENIZAR
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Boletim de Ciências Geodésicas
• Texto Completo: https://revistas.ufpr.br/bcg/article/view/34879
• topic: Geociências; Geodésia; Geodésia

Geodesic auscultation can be used to monitor the movement of dam structures bymeasuring the distance, at different epochs from fixed positions (pillars) to otherpositions (targets). It is important to identify the targets that present atypicalmeasurements to permit managers to take corrective actions. After fitting a modelusing the Least Squares Method (LSM), the residuals normally display randombehavior. Multivariate control charts are then applied to the residuals of the fittedmodel from data taken of geodesic survey campaigns conducted at different epochs.Control charts have been widely applied in other fields of research than productionprocesses such as public health, marketing, services. The results show that it ispossible for monitoring the multi-temporal stability by the multivariate controlcharts. The method provides complementary information than the classicalunivariate statistical analysis.