混凝土厚度檢測（沖擊回波法）

1、混凝土厚度（沖擊回波法）無損檢測能力與測評標(biāo)準(zhǔn)一、技能點(diǎn)能力要求能用沖擊回波法檢測混凝土厚度。二、測評標(biāo)準(zhǔn)序號考核項(xiàng)內(nèi)容及要求分值1檢測準(zhǔn)備（6分）首先開箱清點(diǎn)器具，未清點(diǎn)扣2分。清點(diǎn)完 畢后，測試過程中增補(bǔ)配件扣1分。2正式開始測試前應(yīng)開機(jī)檢查，確定信號線路 通暢，無此行為扣2分。2被測構(gòu)件外觀檢查，無此行為扣2分。22現(xiàn)場數(shù)據(jù)采集準(zhǔn)備工作（12 分）設(shè)備連接組裝：信號線連接主機(jī)，有錯(cuò)插行 為扣1分，有踩線、拽線、折線行為扣1分， 暴力使用扣6分。6新建數(shù)據(jù)文件夾，并以考生編號命名，數(shù)據(jù) 保存路徑為考生新建的數(shù)據(jù)文件夾，最多扣6 分。6輸入標(biāo)定文件名，文件名不規(guī)范扣2分。23波速標(biāo)定（8分）

2、波速標(biāo)定時(shí)測試面應(yīng)為確定厚度位置的中心 位置進(jìn)行測試（離邊界10cm） （1分）；傳感 器安裝位置應(yīng)光滑平整，無表觀缺陷（1分）。 波速標(biāo)定測試時(shí)，激振錘應(yīng)環(huán)形敲擊（1分）， 敲擊點(diǎn)距離傳感器應(yīng)約為5cm （1分）。4波速標(biāo)定采集時(shí)有效測試數(shù)據(jù)不少于8條，少1條扣0. 5分，最多扣4分。44數(shù)據(jù)采集過程（12分）輸入厚度測試保存文件名，文件名不規(guī)范扣2分。2厚度測試時(shí)傳感器安裝位置應(yīng)避開邊界影響2（離邊界cm）,否那么扣2分。厚度測試激振應(yīng)環(huán)形敲擊（2分），敲擊點(diǎn)距 離傳感器應(yīng)小于6cm （2分）且激振錘不得與 傳感器碰撞，否那么扣2分。6厚度測定米集時(shí)有效測試數(shù)據(jù)不少于8條，少1條扣0. 5

3、分,最多扣4分。45數(shù)據(jù)解析（24 分）波速標(biāo)定數(shù)據(jù)處理：應(yīng)采用解析軟件進(jìn)行數(shù) 據(jù)處理，有效解析數(shù)據(jù)不少于8個(gè)，少1條 扣0. 5分,最多扣4分。4厚度解析結(jié)果應(yīng)保存測試結(jié)果一覽圖及結(jié)果文件，缺少任意一項(xiàng)扣1分，最多扣2分；2厚度應(yīng)采用解析軟件進(jìn)行數(shù)據(jù)分析處理（2分），厚度解析應(yīng)正確輸入標(biāo)定波速（2分）。4厚度解析結(jié)果中的數(shù)據(jù)，均應(yīng)解出正確的結(jié) 果值，不得出現(xiàn)解析無有效結(jié)果情況，每出 現(xiàn)一次扣2分，最高扣4分。4厚度解析時(shí)，應(yīng)對波形的有效性進(jìn)行檢查，有效解析數(shù)據(jù)不少于8個(gè),少一個(gè)扣0. 5分，最多扣4分。4厚度解析結(jié)果應(yīng)保存測試結(jié)果一覽圖及結(jié)果文件，缺少任意一項(xiàng)扣1分，最多扣2分；26檢測記錄

4、表及檢測結(jié)果提交（33分）檢測信息填寫完整、字跡清楚、按要求正確 填寫（錯(cuò)填后經(jīng)正確方式修改不扣分），每少 填1項(xiàng)或錯(cuò)誤填1項(xiàng)，扣1分，最多扣6分。6偏差超過30%不得分，5%以內(nèi)總分值：其余情況按下式計(jì)算得分：得分二25-（|測試厚度H-實(shí)際厚度H0|/實(shí)際厚度 H0-0.05） *10025原始數(shù)據(jù)文件及解析結(jié)果、原始記錄表提交。27試驗(yàn)結(jié)束后的整理（5分）設(shè)備歸位：關(guān)閉電源，取下傳感器、連接線、 信號線、設(shè)備清潔、裝箱。4現(xiàn)場用具及時(shí)上交。1合計(jì)總得分100Nondestructive Testing Capability and Evaluation Standard ofConcre

5、te Thickness (Impact Echo Method )Skill requirementsConcrete thickness can be detected by imapct echo method.Evaluation standardSerialnumberExamination itemMarking criterionScores1Detection preparation (6 points)First,open the box and check the instrument, 2 points will be deducted if the instrument

6、 is not checked. After counting, 1 points will be deducted for supplementary parts during the test.2Before the official start of the test, the machine should be turned on to check to make sure that the signal line is unobstructed, and 2 points will be deducted if this step is not performed.2Appearan

7、ce inspection of the instrument under test, without this step, 2 points will be deducted.22On-site data collection and preparation (12 points)Equipment connection and assembly: The signal line is connected to the host, 1 point will be deducted for wrong insertion, 1 point will be deducted for steppi

8、ng on the line, pulling the line, or breaking the line, and 6 points will be deducted for violent use.6Create a new data folder and name it with the candidate number. The data storage path is the new data folder created by the candidate. If there is any improper operation, a maximum of 6 points will

9、 be deducted.6Enter the calibration file name, if the file name is not2SerialnumberExamination itemMarking criterionScoresstandardized, 2 points will be deducted.3Wave speed calibration (8 points)When the wave velocity is calibrated, the test surface should be tested at the center of the determined

10、thickness position (10cm from the boundary) (1 point);The installation position of the sensor should be smooth and flat, with no apparent defects (1 point) ;During the wave speed calibration test, the vibration hammer should be struck in a ring shape( 1 point), The tap point should be about 5cm away

11、 from the sensor (1 point).4There are no less than 8 valid test data during wave speed calibration collection, 0.5 points will be deducted for one less item, and a maximum of 4 points will be deducted.44Data collectionprocess(12 points)Enter the name of the file to save the thickness test.If the fil

12、e name is not standardized, 2 points will be deducted.2During the thickness test, the installation position of the sensor should avoid the influence of the boundary (10cm from the boundary), otherwise 2 points will be deducted.2Thickness test excitation should be ring percussion (2 points),The tap p

13、oint distance sensor should be less than 6cm(2 points), and the vibration hammer must not collide with the sensor, otherwise 2 points will be deducted.6SerialnumberExamination itemMarking criterionScoresThere should be no less than 8 valid test data during thickness measurement and collection, 0.5 p

14、oints will be deducted for 1 less than, and a maximum of 4 points will be deducted.45Data analysis (24 points)Wave velocity calibration and data processing: Analysis software should be used for data processing. There should be no less than 8 valid analysis data, 0.5 points will be deducted for 1 les

15、s, and 4 points will be deducted at most.4The results of thickness analysis should be saved as a list of test results and result files. If any item is missing, 1 point will be deducted, and a maximum of 2 points will be deducted.2Thickness should be analyzed and processed by analytical software (2 p

16、oints),the thickness analysis should correctly input the calibrated wave velocity (2 points).4The data in the thickness analysis result should be solved for the correct result value, there must be no valid results in the analysis, and 2 points will be deducted for each occurrence, with a maximum ded

17、uction of 4 points.4When analyzing the thickness, the validity of the waveform should be checked. There are no less than 8 valid analysis data, 0.5 points will be deducted for 1 less, and 4 points will be deducted at most.4The results of thickness analysis should be saved in2SerialnumberExamination

18、itemMarking criterionScoresthe list of test results and the result file. If any item is missing, 1 point will be deducted, and a maximum of 2 points will be deducted;6Test record form andtest result submission (33 points)The test information is filled in completely, the handwriting is clear, and it is filled in correctly as required (there will be no point deduction if the wrong fill is corrected in the