SYSTEM AND METHOD FOR MINIMIZING THE EFFECTS OF SENSOR ORIENTATION IN SMART OPTICAL MONITORING SYSTEMS

A smart additive manufacturing system uses a spectrometer to collect emission spectra along an optical axis from a laser-generated plasma plume, and wherein the laser beam and the optical axis of the emission spectra are co-axial, at least in the vicinity of the melt pool, thereby minimizing the flu...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	Mazumder, Jyotirmoy, Choi, Joohyun
Format:	Patent
Sprache:	eng
Schlagworte:	ADDITIVE MANUFACTURING TECHNOLOGY ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING CLADDING OR PLATING BY SOLDERING OR WELDING COLORIMETRY CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MACHINE TOOLS MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT MEASURING METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PHYSICS RADIATION PYROMETRY SOLDERING OR UNSOLDERING TESTING TRANSPORTING WELDING WORKING BY LASER BEAM
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A smart additive manufacturing system uses a spectrometer to collect emission spectra along an optical axis from a laser-generated plasma plume, and wherein the laser beam and the optical axis of the emission spectra are co-axial, at least in the vicinity of the melt pool, thereby minimizing the fluctuation of spectral signals caused by ambient pressure/gas variations. The laser beam passes through a beam splitter prior to reaching the work piece, and the emission spectra from the work piece are redirected by the beam splitter to the spectrometer, and wherein the laser beam and the optical axis of the emission spectra are co-axial between the work piece and the beam splitter. The beam splitter may be a dichroic mirror or other type of beam splitter, including holographic beam splitters, and spectral filtering may be carried out with separate optical elements, as long as the overall goal of on-axis excitation and collection is achieved.