WO2014180262A1 - Ultrasonic phased array detection method of steel box beam u-rib angle welding seam - Google Patents

Ultrasonic phased array detection method of steel box beam u-rib angle welding seam Download PDF

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Publication number
WO2014180262A1
WO2014180262A1 PCT/CN2014/076224 CN2014076224W WO2014180262A1 WO 2014180262 A1 WO2014180262 A1 WO 2014180262A1 CN 2014076224 W CN2014076224 W CN 2014076224W WO 2014180262 A1 WO2014180262 A1 WO 2014180262A1
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Prior art keywords
phased array
ultrasonic phased
ultrasonic
array detector
rib
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PCT/CN2014/076224
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French (fr)
Chinese (zh)
Inventor
赵敏
张劲文
刘吉柱
苏权科
钱叶祥
张善顺
朱飞
孙文
徐静
周一亮
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江苏法尔胜材料分析测试有限公司
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Publication of WO2014180262A1 publication Critical patent/WO2014180262A1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/04—Analysing solids
    • G01N29/043—Analysing solids in the interior, e.g. by shear waves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
    • G01N29/22—Details, e.g. general constructional or apparatus details
    • G01N29/26—Arrangements for orientation or scanning by relative movement of the head and the sensor
    • G01N29/262—Arrangements for orientation or scanning by relative movement of the head and the sensor by electronic orientation or focusing, e.g. with phased arrays
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/26—Scanned objects
    • G01N2291/267—Welds
    • G01N2291/2675—Seam, butt welding

Definitions

  • the invention relates to an ultrasonic phased array detection method for a steel box beam u rib quilting, belonging to the technical field of nondestructive testing.
  • the technical specifications of the rib quilting production have relatively specific requirements for the internal quality of the quilting: the penetration depth is not less than 80% of the thickness of the slab, and no excessive defects are allowed in the penetration range. It is difficult and inaccurate to measure the penetration of the corner quilting using conventional ultrasonic (UT) or ray (RT) techniques. UT detection is difficult to discern the top-notch signal and other defect signals or geometric reflection signals, and the resolution is poor. Moreover, the measurement of the unobtrusive measurement relies on the amplitude method, and the quantitative accuracy is poor, which basically cannot meet the requirements for measurement accuracy in the bridge. Due to the need for back patching, RT technology is extremely difficult to construct and has low work efficiency. It is difficult to meet the needs of the project schedule and the cost is high. On the other hand, the thickness difference of the transillumination is large, so the image quality is poor and the sensitivity is low. use.
  • Ultrasonic phased array works by electronic technology to control the emission, deflection, focusing, etc. of the ultrasonic beam to achieve non-destructive testing.
  • U rib quilting detection method which can detect the quilting penetration depth of the steel box girder U rib and the quilting quality in the penetration depth.
  • An ultrasonic phased array detection method for steel box girder rib quilting characterized in that the method comprises the following steps:
  • Step 1 Parameter setting of ultrasonic phased array detector
  • the phased array probe frequency is set to 5MHz-10MHz
  • the time base range is set to 100mm
  • the focal length is set to 16mm
  • the ultrasonic sound speed is set to 3230m/s
  • the angular range is set to 40° to 80°. .
  • Step 2 Debugging of ultrasonic phased array detector
  • the debugging of the ultrasonic phased array detector is divided into three parts:
  • the vertical linear height deviation of the ultrasonic phased array detector on the CSK-IA test block should be within ⁇ 3%, the horizontal linearity error should not exceed ⁇ 0.5mm, and the gain linear amplitude deviation should be ⁇ 3%.
  • the phased array probe then evaluates the effective wafer and performs an effective wafer evaluation on the CSK-IA test block.
  • the number of wafer failures reaches 10% of the number of wafers used or when two adjacent wafers fail simultaneously, the phased array probe needs to be replaced.
  • Step 3 Adjustment of sensitivity Measure the horizontal distance a from the front end of the phased array probe to the first groove, and record the distance a, which is the distance a from the phased array probe to the angular quilting.
  • Step 4 Implement testing
  • the detection line is drawn on the U-rib web, and the line is used as the reference line, and the sensitivity is determined according to the sensitivity determined in the third step.
  • the invention relates to an ultrasonic phased array detection method for a U-rib quilting of a steel box beam, which uses a contrast test block to adjust the sensitivity of the device, records the horizontal distance from the front end of the phased array probe to the groove, and then on the U-rib web The detection line is drawn, and finally the phased array probe is used to detect the penetration depth and internal defects of the quilting.
  • the method of the invention solves the problem of the U-rib quilting penetration and the internal defect detection of the steel box girder, and makes the steel box girder U rib angle The quality of the quilted splicing is effectively controlled.
  • Figure 1 is a schematic view of a detecting device of the present invention.
  • FIG. 2 is a schematic structural view of a CSK-IA test block of the present invention.
  • FIG. 3 is a schematic structural view of a comparative test block of the present invention.
  • Figure 4 is an enlarged view of A in Figure 3.
  • Figure 5 is a schematic view showing the structure of another comparative test block of the present invention.
  • Figure 6 is an enlarged view of B in Figure 5.
  • Figure 7 is a schematic illustration of the determination of the horizontal distance a of a phased array probe to a first trench in accordance with the present invention.
  • Fig. 8 is a schematic view showing the detection line of the U-rib web in the present invention.
  • the present invention relates to an ultrasonic phased array detection method for a steel box beam U rib quilting.
  • the detection device of the method includes an ultrasonic phased array detector 1, a phased array probe 2, and a CSK-IA a test block 3, a comparison test block 4, a U-rib web 5, a panel 6 and a corner quilting 7, the lower end of the U-rib web 5 is joined to the panel 6, and an angular quilting 7 is formed, the phased array
  • the probe 2 is disposed outside the U-rib web 5 for detecting the penetration and internal defects of the corner quilting 7, and the ultrasonic phased array detector 1 is connected to the phased array probe 2.
  • the comparative test block 4 is the same material flat plate chute test block as the U-rib web 5, and one test block is two, and the test piece has a rectangular shape of 150 mm ⁇ 30 mm ⁇ Tmm, wherein T is the thickness of the U-rib.
  • Each of the comparative test blocks 4 is 30 mm from the end of the plane
  • the groove width of the chute 4.1 and the second chute 4.2 is 0.2 mm
  • the groove depth of the first chute 4.1 is 0.2 Tmm
  • the groove depth of the second chute 4.2 is 0.4 Tmm.
  • the flow of the ultrasonic phased array detection method for the steel box beam U rib quilting of the present invention is as follows:
  • Step 1 Ultrasonic phased array detector 1 parameter setting
  • the phased array probe 2 frequency is set to 5MHz-10MHz
  • the time base range is set to 100mm
  • the focal length is set to 16mm
  • the ultrasonic sound speed is set to 3230m/s
  • the angular range is set to 40° ⁇ 80°.
  • Step 2 Debugging of ultrasonic phased array detector 1
  • the debugging of the ultrasonic phased array detector 1 is divided into three:
  • the vertical linear height deviation of the ultrasonic phased array detector 1 on the CSK-IA test block 3 should be within ⁇ 3%, the horizontal linearity error should not exceed ⁇ 0.5mm, and the gain linear amplitude deviation is Within ⁇ 3%.
  • phased array probe 2 effective wafer evaluation, effective chip evaluation on CSK-IA test block 3, when the number of wafer failures reaches 10% of the number of used wafers or two adjacent wafers fail simultaneously, the phase control needs to be replaced Array probe 2.
  • the zero point of the ultrasonic phased array detector 1 is debugged on the CSK-IA test block 3, and the ultrasonic phased array detector 1 is adjusted by the A-type pulse reflection scanning to obtain the sound propagation in the tested material. Accurate signal display.
  • Step 3 Adjustment of sensitivity
  • the sensitivity of the ultrasonic phased array detector 1 is adjusted by the first trench 4.1 and the second trench 4.2, and the echo signal of the first trench 4.1 is adjusted to the ultrasonic phased array detector 1 60%-80% of the full screen, measure the horizontal distance a from the front end of the phased array probe 2 to the first groove 4.1, and record the distance a, which is the distance between the phased array probe 2 and the angle quilt 7. a.
  • Step 4 Implement testing
  • the detection line 8 is drawn on the U-rib web 5, and the line is used as the reference line, and the sensitivity is determined according to the sensitivity determined in the third step.
  • the penetration and internal defects of the corner quilting 7 can be detected.

Abstract

An ultrasonic phased array detection method of a steel box beam U-rib angle welding seam. A detection device of the method comprises an ultrasonic phased array detection instrument (1), a phased array probe (2), a CSK-IA test block (3), a reference block (4), a U-rib web plate (5), a panel (6), and an angle welding seam (7). In the method, the reference block (4) is used to adjust sensitivity of the ultrasonic phased array detection instrument (1), a horizontal distance from a front end of the phased array probe (2) to a groove is recorded, then a detection line is drawn on the U-rib web plate (5), and finally a fusion depth and an internal defect of the welding seam are detected by using the phased array probe (2). The method solves a problem of detecting the fusion depth and the internal defect of the steel box beam U-rib angle welding seam, and effectively controls the welding quality of the steel box beam U-rib angle welding seam.

Description

一种钢箱梁 u肋角焊缝的超声相控阵检测方法 技术领域  Ultrasonic phased array detection method for steel box girder u rib fillet weld
本发明涉及一种钢箱梁 u肋角悍缝的超声相控阵检测方法， 属于 无损检测技术领域。  The invention relates to an ultrasonic phased array detection method for a steel box beam u rib quilting, belonging to the technical field of nondestructive testing.
背景技术  Background technique
随着我国桥梁建设的不断发说展， 正交异性桥面板因其特有的优势正在 越来越多的被应用， 正交异性桥面板在书全桥荷载作用下， 所承受的面内应 力不大， 因此在对正交异性桥面板研究中， 应重点关注局部应力、 面外变 形和扭转产生的应力。 而桥面板疲劳问题的悍缝主要表现在 u肋悍缝。 目 前国内外对钢箱梁桥面板 u肋的无损检测主要是采用磁粉探伤， 磁粉检测 是针对表面和近表面缺陷的检测手段， 无法识别内部缺陷。 然而 u肋角悍 缝生产的技术规范中对悍缝内部质量提出了比较具体的要求： 熔深不低于 板厚的 80%， 熔深范围内不允许有超标缺陷。 使用常规超声（UT )或射线 ( RT )技术对角悍缝进行熔深测量时难度很大， 且精度不高。 UT检测很 难辨别未悍透顶端信号与其他缺陷信号或几何反射信号， 分辨力较差。 且对未悍透的测量依赖波幅法， 定量精度较差， 基本不能满足桥梁中对 于测量精度的要求。 RT技术由于需要背面贴片， 施工难度极大， 工作效 率低， 很难满足工程进度的需要， 成本也高， 另一方面， 该处透照厚度 差大， 故成像质量差， 灵敏度低， 不宜采用。  With the continuous development of bridge construction in China, orthotropic bridges are being applied more and more because of their unique advantages. The in-plane stresses of the orthotropic bridges under the full bridge load are not Large, therefore, in the study of orthotropic bridge decks, attention should be paid to the stress generated by local stress, out-of-plane deformation and torsion. The quilting of the bridge deck fatigue problem is mainly manifested in the rib quilting. At present, the non-destructive testing of the u-ribs of steel box girder bridge decks is mainly based on magnetic particle inspection. Magnetic particle inspection is a detection method for surface and near-surface defects, and internal defects cannot be identified. However, the technical specifications of the rib quilting production have relatively specific requirements for the internal quality of the quilting: the penetration depth is not less than 80% of the thickness of the slab, and no excessive defects are allowed in the penetration range. It is difficult and inaccurate to measure the penetration of the corner quilting using conventional ultrasonic (UT) or ray (RT) techniques. UT detection is difficult to discern the top-notch signal and other defect signals or geometric reflection signals, and the resolution is poor. Moreover, the measurement of the unobtrusive measurement relies on the amplitude method, and the quantitative accuracy is poor, which basically cannot meet the requirements for measurement accuracy in the bridge. Due to the need for back patching, RT technology is extremely difficult to construct and has low work efficiency. It is difficult to meet the needs of the project schedule and the cost is high. On the other hand, the thickness difference of the transillumination is large, so the image quality is poor and the sensitivity is low. use.
超声相控阵工作原理是通过电子技术控制超声声束的发射、 偏 转、 聚焦等来实现无损检测。  Ultrasonic phased array works by electronic technology to control the emission, deflection, focusing, etc. of the ultrasonic beam to achieve non-destructive testing.
发明内容 本发明的目的在于克服上述不足， 提供了一种方便快捷的钢箱梁Summary of the invention The object of the present invention is to overcome the above deficiencies and provide a convenient and quick steel box beam
U肋角悍缝检测方法， 此方法能够对钢箱梁 U肋角悍缝熔深及熔深内 的悍缝质量进行检测。 U rib quilting detection method, which can detect the quilting penetration depth of the steel box girder U rib and the quilting quality in the penetration depth.
本发明的目的是这样实现的：  The object of the invention is achieved in this way:
一种钢箱梁 u肋角悍缝的超声相控阵检测方法， 其特点是所述方法包 括以下歩骤：  An ultrasonic phased array detection method for steel box girder rib quilting, characterized in that the method comprises the following steps:
歩骤一： 超声相控阵检测仪的参数设置  Step 1: Parameter setting of ultrasonic phased array detector
设置超声相控阵检测仪的参数，相控阵探头频率设置为 5MHz-10MHz， 时基范围设置为 100mm, 焦距设置为 16mm、 超声声速设置为 3230m/s、 角度范围设置为 40° 〜80° 。  Set the parameters of the ultrasonic phased array detector. The phased array probe frequency is set to 5MHz-10MHz, the time base range is set to 100mm, the focal length is set to 16mm, the ultrasonic sound speed is set to 3230m/s, and the angular range is set to 40° to 80°. .
歩骤二： 超声相控阵检测仪的调试  Step 2: Debugging of ultrasonic phased array detector
超声相控阵检测仪的调试分为三歩：  The debugging of the ultrasonic phased array detector is divided into three parts:
首先线性的调试， 在 CSK-IA试块上调试超声相控阵检测仪的垂直线 性高度偏差应在 ±3%以内、 水平线性误差不应超过 ±0.5mm、 增益线性幅 值偏差在 ±3%以内。  First linear debugging, the vertical linear height deviation of the ultrasonic phased array detector on the CSK-IA test block should be within ±3%, the horizontal linearity error should not exceed ±0.5mm, and the gain linear amplitude deviation should be ±3%. Within.
然后相控阵探头有效晶片评估，在 CSK-IA试块上进行有效晶片评估， 当晶片失效数量达到所使用晶片数量的 10%或相邻两个晶片同时失效时， 需更换相控阵探头。  The phased array probe then evaluates the effective wafer and performs an effective wafer evaluation on the CSK-IA test block. When the number of wafer failures reaches 10% of the number of wafers used or when two adjacent wafers fail simultaneously, the phased array probe needs to be replaced.
最后零点的调试， 在 CSK-IA试块上调试超声相控阵检测仪的零点。 歩骤三： 灵敏度的调节 测量相控阵探头前端至第一沟槽的水平距离 a， 并记录下此距离 a， 此距 即为相控阵探头至角悍缝的距离 a。 The final zero point is debugged, and the zero point of the ultrasonic phased array detector is debugged on the CSK-IA test block. Step 3: Adjustment of sensitivity Measure the horizontal distance a from the front end of the phased array probe to the first groove, and record the distance a, which is the distance a from the phased array probe to the angular quilting.
歩骤四： 实施检测  Step 4: Implement testing
按照歩骤三确定的距离 a， 在 U肋腹板上划检测线， 以该线为基 准线， 按照歩骤三确定的灵敏度进行检测。  According to the distance a determined in the third step, the detection line is drawn on the U-rib web, and the line is used as the reference line, and the sensitivity is determined according to the sensitivity determined in the third step.
与现有技术相比， 本发明的有益效果是：  Compared with the prior art, the beneficial effects of the present invention are:
本发明一种钢箱梁 U肋角悍缝的超声相控阵检测方法， 用对比试 块对设备进行灵敏度调节， 记录相控阵探头前端至沟槽的水平距离， 然后在 U肋腹板上划出检测线， 最后采用相控阵探头检测悍缝的熔深 和内部缺陷， 本发明方法解决了钢箱梁 U肋角悍缝熔深和内部缺陷检 测的难题， 使钢箱梁 U肋角悍缝的悍接质量得到有效控制。  The invention relates to an ultrasonic phased array detection method for a U-rib quilting of a steel box beam, which uses a contrast test block to adjust the sensitivity of the device, records the horizontal distance from the front end of the phased array probe to the groove, and then on the U-rib web The detection line is drawn, and finally the phased array probe is used to detect the penetration depth and internal defects of the quilting. The method of the invention solves the problem of the U-rib quilting penetration and the internal defect detection of the steel box girder, and makes the steel box girder U rib angle The quality of the quilted splicing is effectively controlled.
附图说明  DRAWINGS
图 1为本发明的检测装置示意图。  Figure 1 is a schematic view of a detecting device of the present invention.
图 2为本发明的 CSK-IA试块结构示意图。  2 is a schematic structural view of a CSK-IA test block of the present invention.
图 3为本发明的对比试块的结构示意图。  3 is a schematic structural view of a comparative test block of the present invention.
图 4为图 3中 A的放大图。  Figure 4 is an enlarged view of A in Figure 3.
图 5为本发明另外一个对比试块的结构示意图。  Figure 5 is a schematic view showing the structure of another comparative test block of the present invention.
图 6为图 5中 B的放大图。  Figure 6 is an enlarged view of B in Figure 5.
图 7为本发明确定相控阵探头至第一沟槽的水平距离 a的示意图。 图 8为本发明 U肋腹板划检测线的示意图。  Figure 7 is a schematic illustration of the determination of the horizontal distance a of a phased array probe to a first trench in accordance with the present invention. Fig. 8 is a schematic view showing the detection line of the U-rib web in the present invention.
图中：  In the picture:
超声相控阵检测仪 1， 相控阵探头 2， Ultrasonic phased array detector 1, Phased array probe 2,
CSK-IA试块 3，  CSK-IA test block 3,
对比试块 4，  Contrast test block 4,
第一斜槽 4.1，  First chute 4.1,
第二斜槽 4.2，  Second chute 4.2,
U肋腹板 5，  U-rib web 5,
面板 6，  Panel 6,
角悍缝 7，  Angle quilting 7,
检测线 8  Detection line 8
距离 a。  Distance a.
具体实施方式  detailed description
参见图 1-5， 本发明涉及一种钢箱梁 U肋角悍缝的超声相控阵检 测方法， 此方法的检测装置包括超声相控阵检测仪 1、 相控阵探头 2、 CSK-IA试块 3、 对比试块 4、 U肋腹板 5、 面板 6和角悍缝 7， 所述 U 肋腹板 5的下端与面板 6悍接， 并形成角悍缝 7， 所述相控阵探头 2 设置在 U肋腹板 5的外侧， 用于检测角悍缝 7的熔深及内部缺陷， 所 述超声相控阵检测仪 1与相控阵探头 2相连。  Referring to Figures 1-5, the present invention relates to an ultrasonic phased array detection method for a steel box beam U rib quilting. The detection device of the method includes an ultrasonic phased array detector 1, a phased array probe 2, and a CSK-IA a test block 3, a comparison test block 4, a U-rib web 5, a panel 6 and a corner quilting 7, the lower end of the U-rib web 5 is joined to the panel 6, and an angular quilting 7 is formed, the phased array The probe 2 is disposed outside the U-rib web 5 for detecting the penetration and internal defects of the corner quilting 7, and the ultrasonic phased array detector 1 is connected to the phased array probe 2.
所述对比试块 4为与 U肋腹板 5相同的材质平板斜槽试块， 试块 一组 2个， 试块外形尺寸为 150mmX 30mmX Tmm的长方形板材， 其 中 T为 U肋板的厚度， 所述每个对比试块 4的平面上距端部 30mm分 斜槽 4.1和第二斜槽 4.2的槽宽均为 0.2mm， 第一斜槽 4.1 的槽深为 0.2Tmm， 第二斜槽 4.2的槽深为 0.4Tmm。 The comparative test block 4 is the same material flat plate chute test block as the U-rib web 5, and one test block is two, and the test piece has a rectangular shape of 150 mm×30 mm×Tmm, wherein T is the thickness of the U-rib. Each of the comparative test blocks 4 is 30 mm from the end of the plane The groove width of the chute 4.1 and the second chute 4.2 is 0.2 mm, the groove depth of the first chute 4.1 is 0.2 Tmm, and the groove depth of the second chute 4.2 is 0.4 Tmm.
本发明一种钢箱梁 U肋角悍缝的超声相控阵检测方法的流程如 下：  The flow of the ultrasonic phased array detection method for the steel box beam U rib quilting of the present invention is as follows:
歩骤一： 超声相控阵检测仪 1的参数设置  Step 1: Ultrasonic phased array detector 1 parameter setting
设置超声相控阵检测仪 1 的参数， 相控阵探头 2 频率设置为 5MHz-10MHz, 时基范围设置为 100mm, 焦距设置为 16mm、 超声声速设 置为 3230m/s、 角度范围设置为 40° 〜80° 。  Set the parameters of the ultrasonic phased array detector 1, the phased array probe 2 frequency is set to 5MHz-10MHz, the time base range is set to 100mm, the focal length is set to 16mm, the ultrasonic sound speed is set to 3230m/s, and the angular range is set to 40°~ 80°.
歩骤二： 超声相控阵检测仪 1的调试  Step 2: Debugging of ultrasonic phased array detector 1
超声相控阵检测仪 1的调试分为三歩：  The debugging of the ultrasonic phased array detector 1 is divided into three:
1、 线性的调试， 在 CSK-IA试块 3上调试超声相控阵检测仪 1的垂直 线性高度偏差应在 ±3%以内、 水平线性误差不应超过 ±0.5mm、 增益线性 幅值偏差在 ±3%以内。  1. Linear debugging, the vertical linear height deviation of the ultrasonic phased array detector 1 on the CSK-IA test block 3 should be within ±3%, the horizontal linearity error should not exceed ±0.5mm, and the gain linear amplitude deviation is Within ±3%.
2、 相控阵探头 2有效晶片评估， 在 CSK-IA试块 3上进行有效晶片评 估， 当晶片失效数量达到所使用晶片数量的 10%或相邻两个晶片同时失效 时， 需更换相控阵探头 2。  2, phased array probe 2 effective wafer evaluation, effective chip evaluation on CSK-IA test block 3, when the number of wafer failures reaches 10% of the number of used wafers or two adjacent wafers fail simultaneously, the phase control needs to be replaced Array probe 2.
3、零点的调试，在 CSK-IA试块 3上调试超声相控阵检测仪 1的零点， 超声相控阵检测仪 1用 A型脉冲反射扫描调整， 以使被检材料中的声传播 获得准确的信号显示。  3. Zero point debugging, the zero point of the ultrasonic phased array detector 1 is debugged on the CSK-IA test block 3, and the ultrasonic phased array detector 1 is adjusted by the A-type pulse reflection scanning to obtain the sound propagation in the tested material. Accurate signal display.
歩骤三： 灵敏度的调节  Step 3: Adjustment of sensitivity
在对比试块 4上，利用第一沟槽 4.1和第二沟槽 4.2调节超声相控阵检 测仪 1 的灵敏度， 并将第一沟槽 4.1 的回波信号调至超声相控阵检测仪 1 满屏的 60%-80%， 测量相控阵探头 2前端至第一沟槽 4.1的水平距离 a, 并记录下此距离 a， 此距离即为相控阵探头 2至角悍缝 7的距离 a。 On the comparison test block 4, the sensitivity of the ultrasonic phased array detector 1 is adjusted by the first trench 4.1 and the second trench 4.2, and the echo signal of the first trench 4.1 is adjusted to the ultrasonic phased array detector 1 60%-80% of the full screen, measure the horizontal distance a from the front end of the phased array probe 2 to the first groove 4.1, and record the distance a, which is the distance between the phased array probe 2 and the angle quilt 7. a.
歩骤四： 实施检测  Step 4: Implement testing
按照歩骤三确定的距离 a，在 U肋腹板 5上划检测线 8， 以该线为 基准线， 按照歩骤三确定的灵敏度进行检测。  According to the distance a determined in the third step, the detection line 8 is drawn on the U-rib web 5, and the line is used as the reference line, and the sensitivity is determined according to the sensitivity determined in the third step.
通过以上歩骤即可检测角悍缝 7的熔深和内部缺陷。  Through the above steps, the penetration and internal defects of the corner quilting 7 can be detected.

Claims

权利 要求 书 Claim
1、 一种一种钢箱梁 U肋角悍缝的超声相控阵检测方法， 其特征在于 所述方法包括以下歩骤：  What is claimed is: 1. A method for ultrasonic phased array detection of a steel box girder U rib quilting, characterized in that the method comprises the following steps:
歩骤一： 超声相控阵检测仪 （1) 的参数设置  Step 1: Parameter setting of ultrasonic phased array detector (1)
设置超声相控阵检测仪 （1) 的参数， 相控阵探头 （2) 频率设置为 5MHz-10MHz, 时基范围设置为 100mm, 焦距设置为 16mm、 超声声速设 置为 3230m/s、 角度范围设置为 40° 〜80° 。  Set the parameters of the ultrasonic phased array detector (1), the phased array probe (2) frequency is set to 5MHz-10MHz, the time base range is set to 100mm, the focal length is set to 16mm, the ultrasonic sound speed is set to 3230m/s, the angle range setting It is 40° ~ 80°.
歩骤二： 超声相控阵检测仪 （1) 的调试  Step 2: Debugging of ultrasonic phased array detector (1)
超声相控阵检测仪 （1) 的调试分为三歩：  The debugging of the ultrasonic phased array detector (1) is divided into three categories:
首先线性的调试， 在 CSK-IA试块 （3) 上调试超声相控阵检测仪（1) 的垂直线性高度偏差应在 ±3%以内、 水平线性误差不应超过 ±0.5mm、 增 益线性幅值偏差在 ±3%以内。  First linear debugging, the vertical linear height deviation of the ultrasonic phased array detector (1) should be within ±3% within the CSK-IA test block (3), the horizontal linearity error should not exceed ±0.5mm, the gain linear amplitude The value deviation is within ±3%.
然后相控阵探头 （2) 有效晶片评估， 在 CSK-IA试块 （3) 上进行有 效晶片评估， 当晶片失效数量达到所使用晶片数量的 10%或相邻两个晶片 同时失效时， 需更换相控阵探头 （2)。  Then the phased array probe (2) is valid for wafer evaluation, and the effective wafer evaluation is performed on the CSK-IA test block (3). When the number of wafer failures reaches 10% of the number of used wafers or the adjacent two wafers fail simultaneously, Replace the phased array probe (2).
最后零点的调试， 在 CSK-IA试块 （3) 上调试超声相控阵检测仪（1) 的零点。  For the final zero point commissioning, debug the zero point of the ultrasonic phased array detector (1) on the CSK-IA test block (3).
歩骤三： 灵敏度的调节  Step 3: Adjustment of sensitivity
在对比试块 （4) 上， 利用第一沟槽 （4.1) 和第二沟槽 （4.2) 调节超 声相控阵检测仪 （1) 的灵敏度， 并将第一沟槽 （4.1) 的回波信号调至超 声相控阵检测仪 （1) 满屏的 60%-80%， 测量相控阵探头 （2) 前端至第一 沟槽（4.1) 的水平距离 a， 并记录下此距离 a， 此距离即为相控阵探头（2) 至角悍缝 （7) 的距离 a。 步骤四： 实施检测 On the comparison test block (4), the sensitivity of the ultrasonic phased array detector (1) is adjusted by the first groove (4.1) and the second groove (4.2), and the echo of the first groove (4.1) is used. The signal is adjusted to 60%-80% of the full screen of the ultrasonic phased array detector (1), and the horizontal distance a of the front end of the phased array probe (2) to the first groove (4.1) is measured, and the distance a is recorded. This distance is the distance a from the phased array probe (2) to the angular quilting (7). Step 4: Implement testing
按照歩骤三确定的距离 a， 在 U肋腹板 （5) 上划检测线 （8)， 以 该线为基准线， 按照步骤三确定的灵敏度进行检测。  According to the distance a determined in the third step, mark the detection line (8) on the U-rib web (5), and use the line as the reference line to detect according to the sensitivity determined in step 3.
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