紫外線探傷燈在無損檢測(cè)NDT中使用

紫外線探傷燈在無損檢測(cè)NDT中使用

紫外線發(fā)生在可見光譜和X射線光譜之間。紫外線波長(zhǎng)范圍指定為100 nm至400 nm，盡管您可能會(huì)發(fā)現(xiàn)長(zhǎng)波側(cè)的定義超過此范圍。雖然人眼看不到大部分紫外線輸出，但在與可見光相鄰的波長(zhǎng)下可以看到紫色眩光。LED紫外線燈可以分為3個(gè)一般區(qū)域。這些紫外線燈被分類為UV-A燈，UV-B燈和UV-C燈。

紫外線 A （UV-A）燈: 400 – 315 nm LED燈傳統(tǒng)上用于無損檢測(cè)（NDT），防偽檢測(cè)或驗(yàn)證（貨幣，駕駛執(zhí)照，文件），取證（犯罪現(xiàn)場(chǎng)調(diào)查），紫外線固化（油墨，粘合劑），藝術(shù)品修復(fù)等應(yīng)用。

專門用于無損檢測(cè)（NDT）的UV-A紫外線探傷燈，熒光滲透劑和磁粉探傷材料在UV-A下在365nm處發(fā)出熒光。這就是滲透劑和熒光磁粉的配方在365nm紫外線燈波長(zhǎng)下反應(yīng)（熒光）的方式。在取證中，在UV-A下，單獨(dú)或通過添加專用粉末來檢測(cè)和檢查許多痕跡。瑞典蘭寶Labino UV-A紫外線燈 產(chǎn)品組合包括GX  UV-A 吊掛式探傷燈, BB2.0系列手持式UV-A紫外線燈, MB2.0系列手持式UV-A紫外線燈, UVG3 2.0紫外線手電筒（UV-A FLASHLIGHT）和UVG5 紫外線頭燈（UV-A HEADLIGHT）。

紫外線B（UV-B）燈：315 – 280 nm是紫外光譜中zui不受贊賞的波長(zhǎng)，盡管并非完全被忽視。紫外線固化，生物醫(yī)學(xué)和DNA分析對(duì)UV-B有一定的用途。

紫外線C（UV-C）燈：280 - 100 nm：

由于COVID-19，短波紫外線燈（UV-C）280 - 100 nm可能是容易被大家熟知的紫外線燈。短波紫外線燈主要用于以及空氣和水凈化系統(tǒng)。

類別的紫外線燈都存在安全問題，盡管短波紫外線燈的UV-C是有害的，不僅對(duì)細(xì)菌等微生物，而且對(duì)人類也是如此。紫外線一般會(huì)對(duì)眼睛造成傷害，并成為皮膚癌的原因。采取一切預(yù)防措施，佩戴專業(yè)的紫外線防護(hù)眼鏡或紫外線防護(hù)面罩來保護(hù)紫外線燈的操作者免受紫外線照射。

How the Ultraviolet (UV) Spectrum is used in nondestructive testing (NDT)

Ultraviolet light occurs between the visible and x-ray spectrums. The Ultraviolet wavelength range is specified as 100 nm to 400 nm although you may find definitions exceeding this on the long wave side. Although much of the output of UV light is not visible to the human eye, a violet glare is visible in wavelengths neighboring visible light. UV light for LEDs can be broken down into 3 general areas. These are classified as UV-A, UV-B and UV-C.

Ultraviolet A (UV-A) 400 – 315 nm LED lights have been traditionally used in applications such as NONDESTRUCTIVE TESTING (NDT), counterfeit detection or validation (Currency, Driver’s license, Documents), FORENSICS (Crime scene investigations), UV CURING (inks, adhesives), ART RESTORATION, to name a few.

Specifically for NONDESTRUCTIVE TESTING (NDT), all fluorescent penetrants and magnetic particle materials fluoresce under UV-A, at 365 nm. This is how the formulations for penetrants and magnetic particle materials were designed to react (fluoresce), at 365 nm wavelength. In Forensics, a number of traces are detected and examined under UV-A, individually, or by adding specialized powders. Labino UV-A portfolio of products consists of GX ORION STATIONERY UV-A, BB 2.0 SERIES HANDHELD UV-A, MB 3.0 SERIES HANDHELD UV-A, UVG3 2.0 UV-A FLASHLIGHT and UVG5 UV-A HEADLIGHT.

Ultraviolet B (UV-B) 315 – 280 nm is the least appreciated wavelength within the UV spectrum albeit not entirely neglected. UV curing, biomedical and DNA analysis have some use for UV-B.

Ultraviolet C (UV-C) 280 – 100 nm lights are perhaps the most recognizable ones these days due to COVID-19. They find usage in disinfection as well as air and water purification systems.

There are safety concerns with all categories of UV, although the UV-C is the most harmful, not just to micro-organisms such as bacteria, but also humans. UV in general can cause damage to the eyes and be the cause of skin cancer. Take all precautions and PROTECT YOURSELF AGAINST UV EXPOSURE.