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1. WO2021207542 - FTIR DATA QUALITY OPTIMIZATION

Publication Number WO/2021/207542
Publication Date 14.10.2021
International Application No. PCT/US2021/026454
International Filing Date 08.04.2021
IPC
B29C 70/30 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
70Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
04comprising reinforcements only, e.g. self-reinforcing plastics
28Shaping operations therefor
30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
G01N 21/3563 2014.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
35using infra-red light
3563for analysing solids; Preparation of samples therefor
G01N 33/42 2006.1
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
33Investigating or analysing materials by specific methods not covered by groups G01N1/-G01N31/131
42Road-making materials
Applicants
  • TPI COMPOSITES, INC. [US]/[US]
Inventors
  • MIGNACCA, Richard
Agents
  • KENNY, Stephen, J.
  • ABELLEIRA, Susan, M.
  • AKHIEZER, Alexander
  • CAI, Mi
  • CHATTERLEY, Alexander, J.
Priority Data
63/007,08008.04.2020US
63/007,08908.04.2020US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FTIR DATA QUALITY OPTIMIZATION
(FR) OPTIMISATION DE LA QUALITÉ DE DONNÉES FTIR
Abstract
(EN)
A method for fabrication of a composite component, e.g. wind turbine blade, comprises forming a composite structure within a mold, the composite structure including a resin dispersed throughout the fibers in the composite structure and applying a surface treatment, e.g. sanding, to at least one region of the composite structure. A Fourier Transform Infrared (FTIR) spectrometer is employed to irradiate the treated surface area with infrared light; and determining the amount of infrared light absorbed in the treated area of the composite structure to measure the chemical bond (distribution efficacy, chemical composition, and cure state) of the composite product. Calibration models for a variety of materials are made using a partial least squares 2-variable regression. These calibration files incorporate spectrum from samples of varying resin-hardener mix ratio, and at varying degree of cure. After library comparison confirms the material, the device automatically selects the correct calibration file, ensuring accurate results.
(FR)
Un procédé de fabrication d'un composant composite, par exemple une pale d'éolienne, consiste à former une structure composite à l'intérieur d'un moule, la structure composite comprenant une résine dispersée dans l'ensemble des fibres dans la structure composite, et à appliquer un traitement de surface, par exemple un ponçage, à au moins une région de la structure composite. Un spectromètre infrarouge à transformée de Fourier (FTIR) est employé pour exposer la zone de surface traitée à une lumière infrarouge ; et la quantité de lumière infrarouge absorbée dans la zone traitée de la structure composite est déterminée pour mesurer la liaison chimique (efficacité de distribution, composition chimique et état de durcissement) du produit composite. Des modèles d'étalonnage pour une variété de matériaux sont obtenus à l'aide d'une régression partielle bi-variée par les moindres carrés. Ces fichiers d'étalonnage incorporent les spectres d'échantillons ayant un rapport de mélange résine-durcisseur variable, à des degrés de durcissement variables. Après qu'une comparaison avec une bibliothèque a confirmé le matériau, le dispositif sélectionne automatiquement le fichier d'étalonnage correct, garantissant des résultats précis.
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