Wuxi Yalian Honeycomb Machinery Factory
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Email:yalian@honeycomb-machine.com

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Street Add: No.17th Floor, Hongcheng International Building, No.358 Theater Rd., Qianjiang New City, Hangzhou, Zhejiang, China

Honeycomb Board Machine Visual Inspection Is The Most Widely Used

Edit: Wuxi Yalian Honeycomb Machinery Factory    Date: May 22, 2017

The honeycomb panels in aircraft composites are a new type of composite material, also known as a honeycomb laminate , made of thin and strong two-layer panels. Its panel selection of metal plate, glass fiber, quartz fiber, carbon fiber, etc .; sandwich materials are aramid, glass fiber,Honeycomb Board Machine aluminum and foam structure. The honeycomb can be made into different shapes. The honeycomb structure on the aircraft is made of corrosion-resistant sandwich, panel, liner, partition (false beam), edge ribs and other parts made of glue. Panel and sandwich between the adhesive with a plastic,Honeycomb Board Machine honeycomb sandwich core adhesive and corrosion-resistant adhesive according to the actual needs of the shape of the vacuum pressure after the application of temperature bonding adhesive molding.

 First, the aeronautical composite material honeycomb damage type

    According to the aeronautical composite material honeycomb structure in the course of the use of damage may occur,Honeycomb Board Machine we can roughly glue the damage to the honeycomb structure parts are divided into the following five categories:

    1, surface damage

    Such damage is generally found by visual inspection, including surface abrasions, scratches, local minor corrosion, surface skin cracks,Honeycomb Board Machine small pits on the surface and local slight depression and so on. This type of damage generally does not produce a significant weakening of the structural strength.

   2, degumming and layered damage

 The damage refers to the fiber layer and the layer or between the panel and sandwich resin failure defects, mainly through the percussion check, ultrasonic detection and other means found. Such damage generally does not cause changes in the appearance of the structure,Honeycomb Board Machine mostly in the production process caused by the initial defects, and repeated use in the process of continuous expansion caused by defects. Degumming or delamination area is too large will cause the overall strength of composite materials weakened, should be promptly repaired.

    3, single side panel damage

    This type of damage includes a partial depression, rupture or perforation of a single side panel, which can be found by visual inspection. This type of damage can make one side of the panel and honeycomb sandwich are damaged (surface collapse), the aerodynamic performance and structural strength of a greater impact.Honeycomb Board Machine Once the damage has to be found after repair and inspection can be re-use.

    4, penetrating damage

    This type of damage refers to the occurrence of penetrating damage to the honeycomb parts,Honeycomb Board Machine severe depressions and a wide range of incomplete damage. Such damage has a serious effect on structural performance and strength, repairs immediately or in case of new pieces as required.

    5, the internal water

  The cause of the damage is mainly due to the edge of the honeycomb structure or honeycomb material docking edge sealing or sealing failure, in the long-term use of the process due to rain, oil immersion and water vapor condensation caused by honeycomb sandwich water. Although the general situation of the honeycomb within the water will not cause serious impact; but in the winter and night temperatures vary greatly,Honeycomb Board Machine due to the accumulation of ice deposition will be caused by composite resin parts within the resin matrix degumming; Will also make the composite material of the resin matrix bonding strength significantly reduced and reduce the overall performance of parts; in particular, all kinds of composite materials prepared by the rudder,Honeycomb Board Machine flaps,Honeycomb Board Machine wing fairing and engine parts, etc., should be promptly check its The internal honeycomb structure of the water situation and make the appropriate repair measures. At present,Honeycomb Board Machine such damage is mainly through infrared thermal imaging, X-ray detector and other means to detect.

    Second, the honeycomb structure of the inspection

    1, visual inspection

    Visual inspection is the most widely used and most direct non-destructive testing method. Mainly by means of magnifying glass and endoscopic observation of the structure of the surface and the area of the area, to observe the obvious structural deformation, discoloration, fracture, screw loosening and other structural abnormalities. It can check the surface scratches, cracks, blistering, wrinkling,Honeycomb Board Machine dents and other defects; especially for transparent glass fiber reinforced plastic products, can be used to detect some of the internal defects and positioning defects, such as inclusions, bubbles, lap parts And the width, the position and status of the honeycomb core, the position of the insert, and the like.

    2, hand hammer percussion method

For single-layer skinned honeycomb structure. Hammer the honeycomb structure of the skin, according to different sounds to determine whether the honeycomb structure degumming. Percussion, pay attention to the hammer and skin vertical, the intensity of appropriate to be able to determine the fault does not damage the skin surface is appropriate. In order to make judgments accurate, you can first test on the specimen. Percussion echo crisp is good, boring is debonding.

    3, the field field detection of portable phased array ultrasonic C-scan detection system

With the development of portable phased array ultrasonic flaw detector technology, ultrasonic C-scan composite field field detection has been achieved;Honeycomb Board Machine it has a high detection resolution, can locate the fiber layer where the damage; and no coupling can be used Plane,Honeycomb Board Machine surface and assembly after the detection of structural parts. Only for different materials and structure, according to the requirements of adjusting the echo interval and echo amplitude can be imaging, can be more direct and rapid detection of NDT honeycomb structure and internal degumming damage.


  
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