KR20140034363A - Fiber-reinforced composite structures including photoluminescence particles, method for manufacturing the structures, and method for detecting impact damage applied to the structures - Google Patents

Fiber-reinforced composite structures including photoluminescence particles, method for manufacturing the structures, and method for detecting impact damage applied to the structures Download PDF

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KR20140034363A
KR20140034363A KR1020120099852A KR20120099852A KR20140034363A KR 20140034363 A KR20140034363 A KR 20140034363A KR 1020120099852 A KR1020120099852 A KR 1020120099852A KR 20120099852 A KR20120099852 A KR 20120099852A KR 20140034363 A KR20140034363 A KR 20140034363A
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fiber
light
reinforced composite
resin
layer
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KR101404034B1 (en
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황인희
김성찬
김성준
김태욱
이상욱
심재열
신정우
박일경
박상욱
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한국항공우주연구원
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/02—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by a sequence of laminating steps, e.g. by adding new layers at consecutive laminating stations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/022—Mechanical properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/02—Physical, chemical or physicochemical properties
    • B32B7/023—Optical properties
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/56—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing sulfur
    • C09K11/562—Chalcogenides
    • C09K11/565—Chalcogenides with zinc cadmium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/59—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing silicon
    • C09K11/592—Chalcogenides
    • C09K11/595—Chalcogenides with zinc or cadmium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/7734—Aluminates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
    • C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
    • C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
    • C09K11/77342—Silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • B32B2041/04—Detecting wrong registration, misalignment, deviation, failure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/40—Properties of the layers or laminate having particular optical properties
    • B32B2307/422—Luminescent, fluorescent, phosphorescent

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

A fiber-reinforced composite structure can have serious internal damage capable of reducing the strength of the structure when receives a shock from the outside, but seemingly signs of the shock is cannot be detected. The present invention provides a fiber-reinforced composite structure including photoluminescent particles, a manufacturing method thereof, and a method for efficiently detecting internal damage due to external shocks applied to a fiber-reinforced composite structure, wherein the fiber-reinforced composite structure comprises a base layer made of a fiber-reinforced composite material, a photoluminescent layer containing photoluminescent particles, and an opaque light blocking coating layer placed on the top of the photoluminescent layer in order from the bottom. [Reference numerals] (AA) Outside; (BB) Inside

Description

광발광 입자를 함유하는 섬유강화 복합재 구조물, 이의 제조방법 및 이의 외부충격 손상 감지방법{Fiber-reinforced composite structures including photoluminescence particles, method for manufacturing the structures, and method for detecting impact damage applied to the structures}TECHNICAL FIELD [0001] The present invention relates to a fiber-reinforced composite structure containing photoluminescent particles, a method for manufacturing the same, and a method for detecting external impact damage, including photoluminescence particles,

본 발명은 섬유강화 복합재 구조물에 가해지는 외부충격에 의한 손상을 감지하기 위한 목적으로 개발된 것으로, 인광 및/또는 형광 등의 광발광(Photoluminescence) 현상을 갖는 광발광 입자를 함유하는 섬유강화 복합재 구조물 및 이의 제조방법 그리고 이의 외부충격 손상 감지방법에 관한 것이다.
The present invention has been developed for the purpose of detecting damage due to an external impact applied to a fiber-reinforced composite structure, and includes a fiber-reinforced composite structure containing photoluminescent particles having a photoluminescence phenomenon such as phosphorescence and / A method for manufacturing the same, and a method for detecting external impact damage.

항공우주 비행체, 선박, 자동차 등의 수송기계 분야와 풍력발전 블레이드 등 일반산업 분야에 널리 사용되고 있는 섬유강화 복합재 구조물은 섬유(Fiber)와 수지(Resin)의 결합체이며, 이러한 섬유강화 복합재 구조물은 섬유, 수지, 프리프레그(Prepreg), 접착제(Adhesive), 하니콤 코아(Honeycomb Core), 폼(Foam) 등의 재료를 사용하여 만들어진다. 섬유는 탄소섬유, 유리섬유, 아라미드섬유, 금속섬유, 실리콘카바이드섬유 등이 있다. 수지는 에폭시 수지, 폴리에스테르 수지, 페놀 수지, 실리콘 수지, 비스말레이미드 수지, 폴리벤지미다졸 수지, 폴리이미드 수지, 폴리에틸렌 수지, 폴리에테르에테르케톤 수지, 폴리페닐렌 설파이드 수지, 폴리에테리미드 수지, 폴리설폰 수지, 폴리아미드 수지 등이 있다. 프리프레그는 섬유를 수지에 예비 함침하여 테이프 형태로 만든 것으로, 로빙(Roving) 프리프레그, 일방향 섬유 프리프레그, 직물(Fabric) 프리프레그 등이 있다. 접착제는 섬유로 보강된 접착제 필름(Supported Adhesive Film)과 섬유로 보강되지 않은 접착제 필름(Unsupported Adhesive Film), 간지 접착제(Interleaf Adhesive), 그리고 풀 접착제(Paste Adhesive) 등을 포함한다.Fiber-reinforced composite structures, which are widely used in general industrial fields such as aerospace vehicles, ships and automobiles, and wind turbine blades, are a combination of fibers and resins. These fiber- Resin, prepreg, adhesive, honeycomb core, foam, and the like. The fibers include carbon fibers, glass fibers, aramid fibers, metal fibers, and silicon carbide fibers. The resin may be an epoxy resin, a polyester resin, a phenol resin, a silicone resin, a bismaleimide resin, a polybenzimidazole resin, a polyimide resin, a polyethylene resin, a polyetheretherketone resin, a polyphenylene sulfide resin, , Polysulfone resin, polyamide resin, and the like. Prepregs are prepared by preliminarily impregnating fibers into a resin and in the form of a tape, such as roving prepregs, unidirectional fiber prepregs, and fabric prepregs. The adhesive includes a fiber-reinforced adhesive film (Unsupported Adhesive Film), a non-reinforced adhesive film (Interleaf Adhesive), and a paste adhesive (Paste Adhesive).

섬유강화 복합재 구조물은 사용 중에 외부충격을 받게 되면, 복합재의 섬유 파손, 기지 균열, 혹은 적층 경계면의 파손이 유발되어 구조물의 인장 및 압축 강도가 크게 저하된다. 특히, 적층 경계면의 분리 파손이 일어나면 압축하중을 받을 때 서브라미네이트(Sublaminate) 좌굴의 발생으로 압축강도가 40% 이하로 저하된다. 또한, 섬유강화 복합재 구조물은 외부충격에 의해 유발된 치명적인 손상을 외부에서 육안으로 탐지하기 어려운 특성을 갖는다. 따라서 외부충격의 개연성이 있는 섬유강화 복합재 구조물을 설계할 때에는, 적정 수준의 외부충격과 그에 따른 내부 손상의 존재를 가정하고 이를 반영하여 섬유강화 적층 복합재가 가지는 강도(Strength)의 절반 이하만을 설계에 적용하기도 한다. 이에 따라 구조물의 중량이 증가하고 섬유강화 적층 복합재의 활용도가 크게 저하되는 문제점이 있다.If the fiber reinforced composite structure is subjected to external impact during use, the fiber is damaged, the base cracks, or the breakage of the lamination interface, resulting in a significant reduction in the tensile and compressive strength of the structure. Particularly, when segregation failure occurs at the lamination interface, the compressive strength is reduced to less than 40% due to occurrence of sublaminate buckling under compression load. Further, the fiber-reinforced composite structure has a characteristic that it is difficult to visually detect fatal damage caused by an external impact from the outside. Therefore, when designing a fiber-reinforced composite structure with the possibility of an external impact, it is assumed that there is an appropriate level of external impact and thus internal damage, and only half or less of the strength of the fiber- It is also applied. As a result, the weight of the structure is increased and the utilization of the fiber-reinforced laminated composite material is significantly reduced.

상기의 섬유강화 복합재 구조물이 갖는 문제점을 해결하고자 하는 방편으로, 섬유강화 복합재 구조물의 충격 손상을 감지하기 위한 많은 기술들이 개발되어 왔다. 예를 들어, 압전소자 센서를 구조물 외부에 부착하는 방법이나, 광섬유 센서를 구조물 내부 혹은 외부에 부착하는 방법 등이 있다. 그러나 이러한 방법들은 과다한 센서를 부착해야 하고 충격 시 발생하는 신호를 식별하여 처리해야 하는 애로 등으로 인해 실용적으로 적용되지 못하고 있다. 최근에는 염료를 미세 캡슐에 넣어 도장하고 충격을 받으면 미세 캡슐이 파괴되고 캡슐 내의 염료가 새어나와 색상의 변화를 유발하는 기술이 개발되었지만, 작은 힘의 충격에도 미세 캡슐이 파괴되어 색상 변화를 유발할 수 있기 때문에 실용적이지 못하다.As a way to solve the problems of the above-mentioned fiber-reinforced composite structure, many techniques for detecting the damage of the fiber-reinforced composite structure have been developed. For example, there are a method of attaching the piezoelectric element sensor to the outside of the structure, a method of attaching the optical fiber sensor to the inside or outside of the structure, and the like. However, these methods have not been practically applied due to the necessity of attaching an excessive number of sensors and the difficulty of identifying and processing the signals generated during the impact. In recent years, micro-capsules have been destroyed by applying a dye into a microcapsule, and a technique has been developed to cause a change in color due to leaking of the dye in the capsule. However, the microcapsules may be destroyed due to a small impact, Because it is not practical.

한편, 발광(luminescence)은 에너지가 높은 불안정한 상태에서 에너지가 낮은 안정한 상태로 되면서 에너지 차이에 해당하는 파장의 빛을 방출하는 현상이다. 이런 빛을 방출하려면 에너지가 높은 불안정한 여기(Excitation) 상태로 만들어야 하는데, 빛 에너지에 의해 여기되는 발광을 광발광(Photoluminescence)이라 한다. 대표적인 광발광 현상으로 형광과 인광이 있는데, 형광은 여기 상태에서 바로 낮은 에너지 상태로 돌아가면서 빛을 내고, 인광은 여기 상태에서 중간에 준안정상태로 전환되었다가 낮은 에너지 상태로 되면서 빛을 낸다.On the other hand, luminescence is a phenomenon in which light of a wavelength corresponding to energy difference is emitted while the energy becomes stable and the energy is low in an unstable state where energy is high. In order to emit such light, the excitation state must be made in a state of high unstable energy. The light emission excited by light energy is referred to as photoluminescence. A typical photoluminescence phenomenon is fluorescence and phosphorescence. Fluorescence returns from the excited state to the low energy state and emits light. The phosphorescence is converted from the excited state to the metastable state in the middle, and then the light is emitted in a low energy state.

종래에는 형광과 인광 등 발광 현상이 안전표시용, 비상구 등 야간 식별장치, 위조 방지, 도료, 미생물 염색, 인체 내 질병 부위 염색 등 다양한 분야에서 활용되고 있으나, 섬유강화 복합재 구조물에 가해지는 외부충격에 의한 손상을 광발광 현상을 이용하여 외부에서 감지하는 기술은 개발되지 않았다.
Conventionally, the luminescence phenomena such as fluorescence and phosphorescence are utilized in various fields such as night signs such as safety signs and emergency exits, anti-counterfeiting, paint, dyeing of microorganisms, dyeing of diseased parts in human body, There has not been developed a technique for detecting damage from outside by using a photoluminescence phenomenon.

1. 대한민국 특허 등록 제478517호1. Korean Patent No. 478517 2. 대한민국 특허 공개 제2012-19385호2. Korean Patent Publication No. 2012-19385

상기한 바와 같이, 섬유강화 복합재 구조물은 외부로부터 충격을 받으면, 구조물의 강도를 크게 저하시키는 심각한 내부손상이 유발될 수 있으나, 외견상으로 충격의 흔적을 감지하기 어렵다.As described above, when a fiber-reinforced composite structure is subjected to an impact from the outside, severe internal damage that greatly reduces the strength of the structure may be caused, but it is difficult to detect the traces of impact apparently.

본 발명은 이러한 문제점을 해결하기 위해 안출된 것으로, 본 발명의 목적은 외부충격에 의한 손상을 효율적으로 감지할 수 있도록 광발광 입자를 함유하는 섬유강화 복합재 구조물 및 이의 제조방법 그리고 이의 외부충격 손상 감지방법을 제공하는 것이다.
SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and it is an object of the present invention to provide a fiber-reinforced composite structure containing photoluminescent particles, a method of manufacturing the same, Method.

본 발명은 상기 목적을 달성하기 위해, 섬유강화 복합재료로 구성되는 기재층; 상기 기재층의 상부(외부)에 형성되고 광발광 입자를 함유하는 광발광층; 및 상기 광발광층의 외부에 형성되는 광차단도장층을 포함하는 섬유강화 복합재 구조물을 제공한다.In order to achieve the above-mentioned object, the present invention provides a base layer made of a fiber-reinforced composite material; A light-emitting layer formed on an upper portion (outside) of the substrate layer and containing photoluminescent particles; And a light blocking coating layer formed on the outside of the light emitting layer.

본 발명에서 상기 기재층은 섬유, 수지, 프리프레그, 접착제, 하니콤 코아, 폼 중에서 선택되는 1종 이상의 재료를 사용하여 만든다.In the present invention, the base layer is made of at least one material selected from fibers, resins, prepregs, adhesives, honeycomb cores, and foams.

본 발명에서 상기 광발광층은 열경화성 수지 및/또는 열가소성 수지에 광발광 입자를 혼합 및 분산시켜 만든 프리프레그와 접착제 중에서 1종 이상을 선택할 수 있다.In the present invention, the photoluminescent layer may be selected from at least one selected from prepreg and adhesives prepared by mixing and dispersing photoluminescent particles in a thermosetting resin and / or a thermoplastic resin.

본 발명에서 상기 광발광 입자는 인광물질과 형광물질 중에서 1종 이상을 선택한다.In the present invention, the photoluminescent particles are selected from at least one of a phosphor and a fluorescent material.

본 발명에서 상기 광차단도장층은 광발광층의 외부에 도료 조성물을 도장하여 형성한다.In the present invention, the light-shielding coating layer is formed by coating a coating composition on the outside of the light-emitting layer.

본 발명에서 상기 기재층, 광발광층 및 광차단도장층은 각각 독립적으로 단층구조 또는 2층 이상의 복층구조를 가질 수 있다.In the present invention, the substrate layer, the light-emitting layer, and the light-shielding coating layer may each independently have a single-layer structure or a multi-layer structure of two or more layers.

또한, 본 발명은 기재층용 섬유강화 복합재료, 광발광층용 재료, 광차단도장층용 재료를 준비하는 단계; 아래로부터 기재층, 광발광층의 순으로 적층하는 단계; 상기 적층한 기재층과 광발광층을 사용하여 섬유강화 복합재 구조물을 성형하는 단계; 및 상기 성형한 섬유강화 복합재 구조물의 상부(외부)에 광차단도장층을 도장하는 단계로 구성되는 제조방법을 제공한다.The present invention also provides a method for producing a light-shielding layer, comprising the steps of: preparing a fiber-reinforced composite material for a base layer, a material for a light- Laminating a base layer and a light-emitting layer in this order from below; Molding the fiber-reinforced composite structure using the laminated base layer and the light-emitting layer; And coating a light-blocking coating layer on the upper (outer) side of the formed fiber-reinforced composite structure.

본 발명의 제조방법에서 상기 적층 단계에서는 통상적인 섬유강화 복합재 구조물을 적층하는 방법을 사용할 수 있다.In the manufacturing method of the present invention, a conventional method of laminating a fiber-reinforced composite structure can be used in the laminating step.

본 발명의 제조방법에서 상기 성형 단계에서는 통상적인 섬유강화 복합재 구조물을 성형하는 방법을 사용할 수 있다.In the manufacturing method of the present invention, a conventional method of molding a fiber-reinforced composite structure can be used in the molding step.

본 발명의 제조방법에서 상기 광차단도장층의 도장 단계에서는 통상적인 섬유강화 복합재 구조물을 도장하는 방법을 사용할 수 있다.In the manufacturing method of the present invention, a conventional method of coating a fiber-reinforced composite structure may be used in the step of coating the light-shielding coating layer.

또한, 본 발명은 상기 기재층, 상기 기재층의 상부(외부)에 형성되고 광발광 입자를 함유하는 광발광층, 및 상기 광발광층의 외부에 형성되는 광차단도장층을 포함하는 섬유강화 복합재 구조물의 표면에 조사광을 조사하는 단계; 및 가시광선이 방출되는지 여부를 육안 혹은 발광감지센서로 검사하는 단계로 구성되는 섬유강화 복합재 구조물의 외부충격 손상 감지 방법을 제공한다.
The present invention also provides a fiber-reinforced composite structure including the base layer, a light-emitting layer formed on the top (outside) of the base layer and containing photoluminescent particles, and a light-shielding coating layer formed outside the light- Irradiating the surface with irradiation light; And inspecting whether visible light is emitted with a naked eye or a light emission sensor. The present invention also provides a method for detecting external impact damage of a fiber reinforced composite structure.

섬유강화 복합재 구조물에 가해지는 외부충격과 그에 따른 내부 손상의 가능성으로 인해, 섬유강화 복합재가 가지는 강도를 대폭 줄여 설계에 적용하게 된다. 본 발명이 제공하는 광발광 입자를 함유하는 섬유강화 복합재 구조물은 외부충격에 의한 내부 손상을 효율적으로 감지할 수 있으며, 이에 따라 구조물을 경량화하고 섬유강화 적층 복합재의 활용도를 크게 증대시킬 수 있다.
Fiber-reinforced composites Due to the external impact on the structure and the possibility of internal damage, the strength of the fiber-reinforced composite material is greatly reduced and applied to the design. The fiber-reinforced composite structure containing the photoluminescent particles provided by the present invention can efficiently detect internal damage due to an external impact, thereby reducing the weight of the structure and greatly increasing the utilization of the fiber-reinforced laminated composite material.

도 1은 본 발명에 따라 광발광 입자를 함유하는 섬유강화 복합재 구조물이 외부충격에 의해 손상을 입은 상태에서 조사광에 의해 빛을 방출하는 원리를 예시한 것이다.FIG. 1 illustrates a principle of emitting light by irradiation light in a state where a fiber-reinforced composite structure containing photoluminescent particles is damaged by an external impact according to the present invention.

이하, 본 발명을 상세하게 설명한다.Hereinafter, the present invention will be described in detail.

본 발명은 섬유강화 복합재 구조물에 가해지는 외부충격에 의한 손상을 감지하기 위한 목적으로 개발된 광발광 입자를 함유하는 섬유강화 복합재 구조물, 상기 섬유강화 복합재 구조물의 제조방법 및 상기 섬유강화 복합재 구조물의 외부충격 손상 감지방법에 관한 것이다.The present invention relates to a fiber-reinforced composite structure containing photoluminescent particles developed for the purpose of detecting damage due to an external impact applied to a fiber-reinforced composite structure, a method for producing the fiber-reinforced composite structure, To an impact damage detection method.

본 발명은 통상적인 섬유강화 복합재 구조물의 가장 바깥층에 광발광층을 형성하고 상기 광발광층의 외부에 광차단도장층을 도장하여 형성한 것을 특징으로 한다.The present invention is characterized in that a light-emitting layer is formed on the outermost layer of a typical fiber-reinforced composite structure and a light-blocking coating layer is formed on the outside of the light-emitting layer.

본 발명이 제공하는 광발광 입자를 함유하는 섬유강화 복합재 구조물의 상세한 구성을 도 1에 따라 설명하면 하기와 같다.DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A detailed structure of a fiber-reinforced composite material structure containing photoluminescent particles provided by the present invention will be described with reference to FIG.

광발광 입자를 함유하는 섬유강화 복합재 구조물은 기재층(100), 상기 기재층(100)의 상부(외부)에 형성되고 광발광 입자를 함유하는 광발광층(200), 및 상기 광발광층(200)의 외부에 형성되는 광차단도장층(300)으로 구성된다.The fiber-reinforced composite structure containing the photoluminescent particles includes a base layer 100, a photoluminescent layer 200 formed on the top (outside) of the base layer 100 and containing photoluminescent particles, And a light blocking coating layer 300 formed on the outside of the light blocking coating layer 300.

상기 기재층(100)은 섬유, 수지, 프리프레그, 접착제, 하니콤 코아, 폼 등의 재료를 사용하여 만들어지는 통상의 섬유강화 복합재층으로 이루어질 수 있다.The base layer 100 may be made of a conventional fiber-reinforced composite material layer made of a material such as fibers, resins, prepregs, adhesives, honeycomb cores, and foams.

상기 광발광층(200)은 광발광 입자를 함유하는 복합재료로 구성될 수 있으며, 구체적으로 광발광 입자를 함유하는 프리프레그 및 광발광 입자를 함유하는 접착제 중에서 선택되는 하나 이상으로 구성될 수 있다. 접착제의 경우 섬유를 포함하거나 포함하지 않을 수 있다. 광발광층(200)도 마찬가지로 단층구조 또는 2층 이상의 복층구조로 구성될 수 있다.The light-emitting layer 200 may be composed of a composite material containing photoluminescent particles, and may be composed of at least one selected from among adhesives containing photoluminescent particles and a prepreg containing photoluminescent particles. In the case of adhesives, fibers may or may not be included. The light-emitting layer 200 may also have a single-layer structure or a multi-layer structure of two or more layers.

상기 광발광층(200)은 광발광 입자를 에폭시 수지, 폴리에스테르 수지, 페놀 수지, 실리콘 수지, 비스말레이미드 수지, 폴리벤지미다졸 수지, 폴리이미드 수지, 폴리에틸렌 수지, 폴리에테르에테르케톤 수지, 폴리페닐렌 설파이드 수지, 폴리에테리미드 수지, 폴리설폰 수지, 폴리아미드 수지 중에서 선택되는 1종 이상의 수지에 혼합하고 분산시켜 만든 프리프레그 및 접착제 중에서 1종 이상으로 구성할 수 있다. 광발광층(200)은 수지 및 광발광 입자 이외에 섬유나 기타 첨가제 등을 포함할 수 있다.The photoluminescent layer 200 may be formed by laminating the photoluminescent particles to a substrate made of an epoxy resin, a polyester resin, a phenol resin, a silicone resin, a bismaleimide resin, a polybenzimidazole resin, a polyimide resin, a polyethylene resin, a polyetheretherketone resin, At least one of a prepreg and an adhesive prepared by mixing and dispersing at least one resin selected from a phenol resin, a phenol resin, a phenol resin, a phenol resin, a phenol resin, a phenol resin, a phenol resin, a phenol resin, The light-emitting layer 200 may include fibers and other additives in addition to the resin and the photoluminescent particles.

바람직하게는, 광발광 입자를 광발광층(200)의 전체 중량에 대하여 2 내지 20 중량%로 혼합 및 분산시켜 프리프레그 혹은 접착제를 만들 수 있다. 상기 광발광 입자를 2 중량% 미만으로 혼합하면 발광 효과를 충분히 얻기 어려울 수 있고, 20 중량%를 초과하여 사용하면 프리프레그 혹은 접착제로서의 효율이 낮아질 수 있다.Preferably, the photoluminescent particles are mixed and dispersed in an amount of 2 to 20% by weight based on the total weight of the light-emitting layer 200 to form a prepreg or an adhesive. If the photoluminescent particles are mixed in an amount of less than 2% by weight, it may be difficult to sufficiently obtain a luminescent effect. If the content is more than 20% by weight, the efficiency as a prepreg or an adhesive may be lowered.

상기 광발광 입자로는 인광물질, 형광물질 또는 이들의 혼합물을 사용할 수 있다. 광발광 입자로 사용할 수 있는 인광물질과 형광물질은 하기와 같다. 인광물질의 예로는 알칼리토금속의 황화물이나 황화아연에 중금속을 함유한 것 등으로 무수히 많으며, 특별한 제한은 없다. 그러나 복합재 구조물에 유발된 손상을 감지하기 위한 본 발명의 목적에 보다 잘 부합하기 위해서는, 잔광시간이 비교적 긴 ZnS:Cu(Ag), ZnS:Ag+(Zn,Cd)S:Cu, Zn2SiO4:Mn,As, KCl, (Zn,Mg)F2:Mn, (Zn,Cd)S:Cu, (KF,MgF2):Mn, 인광물질에 라듐, 토륨 등 방사성 물질을 미량 첨가한 것, 비방사성 물질을 첨가한 것, 혹은 유로퓸(Europium) 이온을 활성화시킨 스트론튬알루마트(SrAl2O4 : Eu, Dy)가 바람직하다. 형광물질의 예로는 황화물계, 규산염계, 인산염계 등에 미량의 은, 구리, 망간, 납의 부활제를 섞은 것 등으로 무수히 많으며, 특별한 제한은 없다.As the photoluminescent particles, a phosphor, a fluorescent material, or a mixture thereof may be used. Phosphorescent materials and fluorescent materials that can be used as photoluminescent particles are as follows. Examples of the phosphorescent material include numerous sulfides of alkaline earth metals or zinc sulfides containing heavy metals, and there is no particular limitation. However, in order to better match than the object of the present invention for detecting induced damage to composite structures, the decay time is relatively long ZnS: Cu (Ag), ZnS : Ag + (Zn, Cd) S: Cu, Zn 2 SiO 4 : Mn, As, KCl, (Zn, Mg) F 2 : Mn, (Zn, Cd) S: Cu, (KF, MgF 2 ) A non-radioactive material is added, or strontium alumite (SrAl 2 O 4 : Eu, Dy) which activates Europium ions is preferable. Examples of the fluorescent material include numerous sulfides, silicates, phosphates, and the like, in which a small amount of silver, copper, manganese, and lead activators are mixed, and there is no particular limitation.

상기 광발광 입자의 크기는 평균 지름으로 수 nm 내지 수십 ㎛일 수 있으며, 바람직하게는 0.01 내지 50 ㎛일 수 있다. 이러한 크기 범위를 갖는 광발광 입자를 사용할 경우 수지와의 분산성 및 광발광 효과가 우수하다.The size of the photoluminescent particles may be from several nm to several tens of 탆 in average diameter, and preferably from 0.01 to 50 탆. When the photoluminescent particles having such a size range are used, the dispersibility with the resin and the photoluminescence effect are excellent.

상기 광차단도장층(300)은 상기 광발광층(200)의 외부에 위치하여 가시광선과 자외선 등의 광선을 차단하는 불투명층이며 바람직하게는 30% 이하의 광투과율을 갖는 것이다. 광차단도장층(300)은 구체적으로 프라이머도장층, 덧칠도장층 중에서 선택되는 하나 이상으로 구성될 수 있다.The light blocking coating layer 300 is an opaque layer located outside the light emitting layer 200 to block light such as visible light and ultraviolet light, and preferably has a light transmittance of 30% or less. The light shielding coating layer 300 may be composed of at least one selected from among a primer coating layer and a coating layer.

본 발명이 제공하는 광발광 입자를 함유하는 섬유강화 복합재 구조물의 제조방법은 기재층(100)용 섬유강화 복합재료, 광발광층(200)용 재료, 광차단도장층(300)용 재료를 준비하는 단계; 아래로부터 기재층(100), 광발광층(200)의 순으로 적층하는 단계; 상기 적층한 기재층(100)과 광발광층(200)을 사용하여 섬유강화 복합재 구조물을 성형하는 단계; 및 상기 성형한 섬유강화 복합재 구조물의 상부(외부)에 광차단도장층(300)을 도장하는 단계로 구성된다.The method for producing a fiber-reinforced composite structure containing photoluminescent particles provided by the present invention comprises the steps of preparing a fiber-reinforced composite material for a base layer (100), a material for a photoluminescent layer (200) step; Laminating the base layer 100 and the light-emitting layer 200 in this order from below; Molding the fiber-reinforced composite structure using the laminated base layer 100 and the light-emitting layer 200; And coating a light blocking coating layer (300) on the upper (exterior) of the formed fiber reinforced composite structure.

상기 적층 단계에서는 수적층법(Hand lay-up), 자동테이프적층법(Automated tape placement), 자동토우적층법(Automated tow placement), 필라멘트 와인딩법(Filament winding), 샌드위치 구성법(Sandwich construction), 접착제 본딩법(Adhesive bonding) 중에서 선택되는 하나 이상의 방법을 사용할 수 있다.In the laminating step, an adhesive layer may be formed on a surface of a substrate such as a hand lay-up method, an automated tape placement method, an automated tow placement method, a filament winding method, a sandwich construction method, Adhesive bonding may be used.

상기 성형 단계에서는 진공백몰딩법(Vacuum bag molding), 오븐성형법(Oven curing), 오토클레이브성형법(Autoclave curing), 가열프레스몰딩법(Hot press molding), 히팅몰딩법(Heat molding), 레진트랜스퍼몰딩법(Resin transfer molding) 중에서 선택되는 하나 이상의 방법을 사용할 수 있다.In the molding step, a vacuum molding process such as vacuum bag molding, oven molding, autoclave curing, hot press molding, heat molding, resin transfer molding, Resin transfer molding may be used.

상기 도장 단계에서는 분무도장, 정전도장, 롤러브러쉬도장, 혹은 칠솔도장 등의 방법을 사용할 수 있다. In the coating step, spray coating, electrostatic coating, roller brush coating, chill coating, or the like can be used.

또한, 본 발명은 섬유강화 복합재료로 구성되는 기재층(100), 상기 기재층(100)의 상부(외부)에 형성되고 광발광 입자를 함유하는 광발광층(200), 및 상기 광발광층(200)의 외부에 형성되는 광차단도장층(300)을 포함하는 섬유강화 복합재 구조물의 표면에 조사광을 조사하는 단계; 및 가시광선이 방출되는지 여부를 육안 혹은 발광감지센서로 검사하는 단계로 구성되는 섬유강화 복합재 구조물의 외부충격 손상 감지방법을 제공한다.The present invention also provides a light emitting device comprising a base layer 100 made of a fiber reinforced composite material, a light emitting layer 200 formed on the top (outside) of the base layer 100 and containing photoluminescent particles, And a light blocking coating layer (300) formed on the outer surface of the fiber reinforced composite structure (300); And inspecting whether visible light is emitted with a naked eye or a light emission sensor. The present invention also provides a method for detecting external impact damage of a fiber reinforced composite structure.

상기 외부충격에 의한 섬유강화 복합재 구조물의 손상을 검사하는 방법은 가시광선, 자외선, X선, 방사선 등을 조사하고 육안 혹은 발광감지센서를 통해 방출되는 빛을 감지하는 것일 수 있다. 바람직하게는, 섬유강화 복합재 구조물의 표면에 어두운 환경을 조성하고 자외선을 조사하여 가시광선이 방출되는지 여부를 육안으로 확인하는 것이다.The method of inspecting the damage of the fiber-reinforced composite structure due to the external impact may include irradiating visible light, ultraviolet light, X-ray, and radiation, and sensing light emitted through the naked eye or the light emission sensor. Preferably, a dark environment is created on the surface of the fiber-reinforced composite structure, and whether visible light is emitted by irradiating ultraviolet rays is visually confirmed.

도 1을 참고하면, 본 발명이 제공하는 상기 광발광 입자를 함유하는 섬유강화 복합재 구조물에 가해지는 외부충격에 의한 손상을 외부에서 감지하는 원리는 하기와 같다.Referring to FIG. 1, the principle of detecting the damage caused by an external impact applied to a fiber-reinforced composite structure containing the photoluminescent particles provided by the present invention is as follows.

광발광 입자를 함유하는 섬유강화 복합재 구조물이 외부충격을 받지 않은 건전한 상태에서는, 상기 광차단도장층(300)이 가시광선과 자외선 등의 여기광을 차단하므로, 상기 광발광층(200)에 함유된 광발광 입자가 빛을 방출하지 않는다. 혹은 일부 X선과 방사선 등이 상기 광차단도장층(300)을 통과하여 상기 광발광층(200)에 함유된 광발광 입자를 여기하더라도, 광발광 입자가 방출한 빛이 상기 광차단도장층(300)을 통과하여 외부로 나오지 못한다. 따라서 섬유강화 복합재 구조물이 외부충격을 받지 않은 건전한 상태에서는, 복합재 구조물의 내부로부터 빛이 방출되지 않거나 혹은 빛이 방출되더라도 외견상으로 감지할 수 없으므로, 섬유강화 복합재 구조물이 외부충격에 의해 손상되지 않았다고 판단할 수 있다.The light blocking coating layer 300 shields excitation light such as visible light and ultraviolet light in a sound state in which the fiber reinforced composite structure containing the photoluminescent particles is not subjected to an external impact so that light contained in the light emitting layer 200 The luminescent particles do not emit light. Or a part of X-rays and radiation may pass through the light blocking coating layer 300 to excite the light emitting particles contained in the light emitting layer 200, the light emitted from the light emitting particles may enter the light blocking coating layer 300, And does not come out. Therefore, when the fiber-reinforced composite structure is in a sound state without being subjected to an external impact, the fiber-reinforced composite structure is not damaged by the external impact because light can not be emitted from the interior of the composite structure or even if light is emitted, It can be judged.

그러나 상기 섬유강화 복합재 구조물의 표면에 외부충격이 가해지면, 상기 광차단도장층(300)이 벗겨지거나, 깨지거나, 뜯어지는 등의 현상으로 손상되며, 이로 인하여 상기 광발광 입자를 함유하는 광발광층(200)이 외부로 노출된다. 외부로 노출된 상기 광발광층(200)에 함유된 광발광 입자가 가시광선, 자외선, X선, 방사선 등의 조사광(400)에 의해 여기되면 빛을 방출한다. 따라서 본 발명이 제공하는 광발광 입자를 함유하는 섬유강화 복합재 구조물이 외부충격을 받아 손상을 입은 상태에서는, 복합재 구조물의 내부로부터 방출되는 방출광(500)을 외견상으로 감지할 수 있으므로, 복합재 구조물이 외부충격에 의해 손상되었다고 판단할 수 있다.
However, if an external impact is applied to the surface of the fiber-reinforced composite structure, the light-blocking coating layer 300 is damaged by peeling, breaking, tearing or the like. As a result, (200) is exposed to the outside. When the photoluminescent particles contained in the light-emitting layer 200 exposed to the outside are excited by the irradiation light 400 such as visible light, ultraviolet light, X-ray, or radiation, light is emitted. Therefore, when the fiber-reinforced composite structure containing the photoluminescent particles provided by the present invention is damaged due to external impact, the emitted light 500 emitted from the inside of the composite structure can be visually perceived, It can be judged that it is damaged by the external impact.

이하, 본 발명을 하기 실시예에 의하여 보다 상세하게 설명하고자 한다. 단, 하기 실시예는 본 발명을 예시하기 위한 것일 뿐, 본 발명의 범위가 이들에 국한되는 것은 아니다.
Hereinafter, the present invention will be described in more detail with reference to the following examples. However, the following examples are intended to illustrate the present invention, but the scope of the present invention is not limited thereto.

[실시예 1]Example 1

본 실시예는 접착제 필름을 사용하여 광발광층을 구성한 예이다.This embodiment is an example of constituting a light-emitting layer using an adhesive film.

기재층의 재료는 탄소섬유 약 60 중량% 및 에폭시 수지 약 40 중량%인 일방향 섬유 프리프레그를 준비하였다.As the material of the base layer, a unidirectional fiber prepreg having about 60% by weight of carbon fiber and about 40% by weight of epoxy resin was prepared.

광발광층의 재료는 에폭시 수지 약 90 중량% 및 광발광 입자로서 평균지름 30 ㎛의 ZnS:Cu(Ag) 약 10 중량%를 혼합하여 만든 접착제 필름을 준비하였다.The material of the light-emitting layer was prepared by mixing about 90% by weight of an epoxy resin and about 10% by weight of ZnS: Cu (Ag) having a mean diameter of 30 μm as photoluminescent particles.

아래로부터 기재층, 광발광층의 순으로 수적층법을 사용하여 적층하고, 가열프레스몰딩법으로 섬유강화 복합재 구조물을 성형하였다.A base layer and a photoluminescent layer were laminated in this order from the bottom using an aqueous lamination method, and a fiber-reinforced composite structure was formed by a hot press molding method.

광차단도장층은 용제 약 65 중량%, 에폭시 수지 약 35 중량% 및 첨가제 미량을 혼합하고 분산시켜 만든 프라이머 도료를 상기 성형된 섬유강화 복합재 구조물의 외부에 도장하여 형성하였다.
The light shielding coating layer was formed by coating a primer coating made by mixing and dispersing about 65 wt.% Of a solvent, about 35 wt.% Of an epoxy resin, and a minor amount of an additive on the outside of the formed fiber reinforced composite structure.

[실시예 2][Example 2]

본 실시예는 프리프레그를 사용하여 광발광층을 구성한 예이다.This embodiment is an example in which a photoluminescent layer is constituted by using a prepreg.

실시예 1과 동일하되, 광발광층은 탄소섬유 약 60 중량%, 에폭시 수지 약 37 중량% 및 광발광 입자로서 평균지름 30 ㎛의 ZnS:Cu(Ag) 약 3 중량%를 혼합하고 분산시켜 만든 직물 프리프레그로 구성하였다.
The photoluminescent layer was the same as in Example 1 except that a fabric made by mixing and dispersing about 60% by weight of carbon fiber, about 37% by weight of an epoxy resin and about 3% by weight of ZnS: Cu (Ag) having a mean diameter of 30 μm as photoluminescent particles Prepregs.

[시험예][Test Example]

실시예에서 제조된 섬유강화 복합재 구조물에 12 Joules의 충격에너지를 가하여 광차단도장층을 손상시켰다. 손상된 부위의 표면에 어두운 환경을 조성하고 자외선을 조사한 결과, 광발광층으로부터 가시광선이 방출되는 것을 육안으로 확인함으로써, 섬유강화 복합재 구조물의 손상 여부를 감지하였다.
An impact energy of 12 Joules was applied to the fiber-reinforced composite structure prepared in the example to damage the light-blocking coating layer. The damage of the fiber reinforced composite structure was detected by visually confirming that visible light was emitted from the light emitting layer as a result of forming a dark environment on the surface of the damaged area and irradiating ultraviolet rays.

100: 기재층
200: 광발광층
300: 광차단도장층
400: 조사광
500: 방출광100: substrate layer
200: light-emitting layer
300: light shielding paint layer
400: irradiation light
500: emitted light

Claims (8)

섬유강화 복합재료로 구성되는 기재층;
상기 기재층 상부에 형성되고 광발광 입자를 함유하는 광발광층; 및
상기 광발광층 상부에 형성되는 광차단도장층을 포함하는 섬유강화 복합재 구조물.
A base layer composed of a fiber reinforced composite material;
A light-emitting layer formed on the base layer and containing photoluminescent particles; And
Fiber reinforced composite structure comprising a light-blocking coating layer formed on the light emitting layer.
제1항에 있어서,
상기 광발광층은 에폭시 수지, 폴리에스테르 수지, 페놀 수지, 실리콘 수지, 비스말레이미드 수지, 폴리벤지미다졸 수지, 폴리이미드 수지, 폴리에틸렌 수지, 폴리에테르에테르케톤 수지, 폴리페닐렌 설파이드 수지, 폴리에테리미드 수지, 폴리설폰 수지, 폴리아미드 수지 중에서 선택되는 1종 이상의 수지에 광발광 입자를 혼합 및 분산시켜 만든 프리프레그 및 접착제 중에서 선택되는 1종 이상으로 구성되는 것을 특징으로 하는 섬유강화 복합재 구조물.
The method of claim 1,
The photoluminescent layer is epoxy resin, polyester resin, phenol resin, silicone resin, bismaleimide resin, polybenzimidazole resin, polyimide resin, polyethylene resin, polyetheretherketone resin, polyphenylene sulfide resin, polyether A fiber-reinforced composite structure comprising at least one selected from prepregs and adhesives made by mixing and dispersing photoluminescent particles in at least one resin selected from a mid resin, a polysulfone resin, and a polyamide resin.
제1항에 있어서,
상기 광발광 입자는 인광물질로서 ZnS:Cu(Ag), ZnS:Ag+(Zn,Cd)S:Cu, Zn2SiO4:Mn,As, KCl, (Zn,Mg)F2:Mn, (Zn,Cd)S:Cu, (KF,MgF2):Mn, SrAl2O4:Eu,Dy, 형광물질로서 황화물계, 규산염계, 인산염계 화합물 중에서 선택되는 1종 이상인 것을 특징으로 하는 섬유강화 복합재 구조물.
The method of claim 1,
The light emitted particles ZnS as phosphors: Cu (Ag), ZnS: Ag + (Zn, Cd) S: Cu, Zn 2 SiO 4: Mn, As, KCl, (Zn, Mg) F 2: Mn, (Zn , Cd) S: Cu, ( KF, MgF 2): Mn, SrAl 2 O 4: Eu, Dy, as a fluorescent substance sulfide-based, silicate-based, fiber-reinforced composite material, characterized in that at least one member selected from the group consisting of phosphate-based compound structure.
제1항에 있어서,
상기 광발광 입자는 광발광층 전체 중량에 대하여 2 내지 20 중량%로 함유되는 것을 특징으로 하는 섬유강화 복합재 구조물.
The method of claim 1,
The photoluminescent particles are fiber reinforced composite structure, characterized in that contained in 2 to 20% by weight based on the total weight of the light emitting layer.
제1항에 있어서,
상기 광차단도장층은 프라이머도장층, 덧칠도장층 중에서 선택되는 1종 이상으로 구성되는 것을 특징으로 하는 섬유강화 복합재 구조물.
The method of claim 1,
Wherein the light-shielding coating layer is composed of at least one selected from a primer coating layer and a coating layer.
기재층용 섬유강화 복합재료, 광발광층용 재료, 광차단도장층용 재료를 준비하는 단계;
아래로부터 기재층, 광발광층의 순으로 적층하는 단계;
상기 적층한 기재층과 광발광층을 사용하여 섬유강화 복합재 구조물을 성형하는 단계; 및
상기 성형한 섬유강화 복합재 구조물의 상부에 광차단도장층을 도장하는 단계로 구성되는 섬유강화 복합재 구조물의 제조방법.
Preparing a fiber-reinforced composite material for a substrate layer, a material for a light emitting layer, and a material for a light blocking coating layer;
Laminating a base layer and a light-emitting layer in this order from below;
Molding the fiber-reinforced composite structure using the laminated base layer and the light-emitting layer; And
And coating a light-blocking coating layer on the molded fiber-reinforced composite structure.
섬유강화 복합재료로 구성되는 기재층, 상기 기재층 상부에 형성되고 광발광 입자를 함유하는 광발광층, 및 상기 광발광층 외부에 형성되는 광차단도장층을 포함하는 섬유강화 복합재 구조물의 표면에 조사광을 조사하는 단계; 및
가시광선이 방출되는지 여부를 육안 혹은 발광감지센서로 검사하는 단계로 구성되는 섬유강화 복합재 구조물의 외부충격 손상 감지방법.
Irradiation light on the surface of the fiber-reinforced composite structure comprising a substrate layer composed of a fiber-reinforced composite material, a light emitting layer formed on the substrate layer and containing photoluminescent particles, and a light blocking coating layer formed outside the photoluminescent layer. Investigating; And
A method of detecting external impact damage of a fiber reinforced composite structure, which comprises visually inspecting whether visible light is emitted or not using a light sensor.
제7항에 있어서,
섬유강화 복합재 구조물의 표면에 어두운 환경을 조성하고 자외선을 조사하여 가시광선이 방출되는지 여부를 육안으로 확인하는 것을 특징으로 하는 섬유강화 복합재 구조물의 손상 감지방법.8. The method of claim 7,
Wherein a dark environment is formed on the surface of the fiber reinforced composite structure, and whether visible light is emitted by irradiating ultraviolet rays is visually confirmed.
KR1020120099852A 2012-09-10 2012-09-10 Fiber-reinforced composite structures including photoluminescence particles, method for manufacturing the structures, and method for detecting impact damage applied to the structures KR101404034B1 (en)

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