PASSIVE STRAIN INDICATOR

• Main Authors: WILLIAM F RANSON, GREGORY LEE HOVIS
• Format: Patent
• Language: English; Japanese
• Published: 08.11.2018
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION ENGINES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; ENGINE PLANTS IN GENERAL; GAS-TURBINE PLANTS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MACHINES OR ENGINES IN GENERAL; MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; MECHANICAL ENGINEERING; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; PHYSICS; STEAM ENGINES; TESTING; WEAPONS

PROBLEM TO BE SOLVED: To provide methods for making components having passive strain indicators and systems for monitoring strain, and in particular, passive strain indicators which may be formed separately from a component and joined to the component.SOLUTION: A passive strain indicator 40 comprises a plurality of fiducial markers 12, which are formed on a shim by deforming selected locations on the shim, and is formed by attaching a portion of the shim to an outer surface 14 of a component 10. The formation of the component 10 and the formation of the passive strain indicator 40 are performed separately prior to attaching the shim to the outer surface 14 of the component 10. A system for monitoring strain includes a component 10 and a passive strain indicator 40. A portion of the passive strain indicator 40 is integrally joined with an outer surface 14 of the component 10. The passive strain indicator 40 includes a shim and a plurality of fiducial markers 12, where each fiducial marker 12 is a discrete three-dimensional feature on the shim.SELECTED DRAWING: Figure 1 【課題】受動歪みインジケータを有する部品を作製するための方法および歪みをモニタするためのシステムに関し、特に、部品から別々に形成されて部品に接合されることのある受動歪みインジケータを提供する。【解決手段】受動歪みインジケータ４０は、複数の基準標識１２を備え、シム上の選択した場所を変形させることによって、シム上に形成され、シムの一部分を部品１０の外側表面１４に取り付け形成される。部品１０の形成および受動歪みインジケータ４０の形成は、シムを部品１０の外側表面１４に取り付ける前に、別々に実行される。歪みをモニタするためのシステムは、部品１０および受動歪みインジケータ４０を含み、受動歪みインジケータ４０の一部分は、部品１０の外側表面１４と一体的に接合される。受動歪みインジケータ４０は、シムおよび複数の基準標識１２を含み、各基準標識１２は、シム上の離散した３次元的な特徴部である。【選択図】図１