1 00:00:03,733 --> 00:00:05,398 Hello, my name is Coleman Flanagan 2 00:00:05,400 --> 00:00:08,431 and I'm the product manager for Ultrasonic Portable Flaw Detectors 3 00:00:08,433 --> 00:00:09,831 for Olympus NDT. 4 00:00:09,833 --> 00:00:12,498 Today we are here to talk about the Epoch 600 5 00:00:12,500 --> 00:00:15,566 and an optional software feature called Template Storage. 6 00:00:15,568 --> 00:00:19,198 Template Storage allows the user to save a live A-scan 7 00:00:19,200 --> 00:00:22,798 as a stored template or overlay to the instrument. 8 00:00:22,800 --> 00:00:25,831 Once saved, the operator is easily able to activate 9 00:00:25,833 --> 00:00:27,898 or de-activate this stored template 10 00:00:27,900 --> 00:00:30,631 as an overlay on the live A-scan display. 11 00:00:30,633 --> 00:00:33,331 This allows the operator to compare the live A-scan 12 00:00:33,333 --> 00:00:36,731 to the stored template to look for resemblance's 13 00:00:36,733 --> 00:00:40,665 to characteristic geometry or known flaw conditions within the test sample. 14 00:00:40,666 --> 00:00:43,498 Template Storage has a wide variety of uses 15 00:00:43,500 --> 00:00:46,265 but is commonly used for the ultrasonic inspection 16 00:00:46,266 --> 00:00:48,265 of automotive spot welds. 17 00:00:48,266 --> 00:00:50,798 Let's take a look at the way that Template Storage 18 00:00:50,800 --> 00:00:53,365 can assist the inspection of spot welds. 19 00:00:53,366 --> 00:00:56,566 The most classic example of ultrasonic spot weld inspection 20 00:00:56,568 --> 00:00:59,565 in the automotive industry is evaluating weld nuggets 21 00:00:59,566 --> 00:01:01,931 created by electrical resistance welding 22 00:01:01,933 --> 00:01:04,031 for their ultrasonic characteristics. 23 00:01:04,033 --> 00:01:06,331 These weld nuggets hold together at least 24 00:01:06,333 --> 00:01:09,731 two sheets of metal in some component of the automobile. 25 00:01:09,733 --> 00:01:12,765 During ultrasonic evaluation of a weld nugget, 26 00:01:12,766 --> 00:01:16,098 the operator will couple a high frequency delay line transducer 27 00:01:16,100 --> 00:01:19,431 to the welded area and allow the screen range 28 00:01:19,433 --> 00:01:23,533 to view multiple back wall reflections through that weld nugget. 29 00:01:23,535 --> 00:01:26,100 The operator then looks for characteristic patterns 30 00:01:26,101 --> 00:01:29,698 of the ring down of the sound to evaluate the condition of the weld. 31 00:01:29,700 --> 00:01:32,265 The Template Storage feature of the Epoch 600 32 00:01:32,266 --> 00:01:35,098 allows the operator to store these known conditions of the weld 33 00:01:35,100 --> 00:01:37,698 on the screen for live display. 34 00:01:37,700 --> 00:01:41,133 This allows the operator to easily view comparisons 35 00:01:41,135 --> 00:01:45,000 of the known representation to the live A-scan during evaluation. 36 00:01:45,001 --> 00:01:48,231 Once the operator has stored a template into the instrument, 37 00:01:48,233 --> 00:01:50,931 it is very easy to use the P keys to activate 38 00:01:50,933 --> 00:01:52,965 or de-activate that template 39 00:01:52,966 --> 00:01:56,098 and compare a live A-scan to known conditions. 40 00:01:56,100 --> 00:01:57,798 In the good weld condition 41 00:01:57,800 --> 00:01:59,865 the weld nugget has formed properly 42 00:01:59,866 --> 00:02:03,031 and ultrasound is penetrating through both sheets of the material. 43 00:02:03,033 --> 00:02:05,298 In the undersize condition 44 00:02:05,300 --> 00:02:08,231 a weld nugget has formed that creates a proper bond 45 00:02:08,233 --> 00:02:10,298 between the two sheets of material, 46 00:02:10,300 --> 00:02:13,333 however the weld nugget diameter is not large enough 47 00:02:13,335 --> 00:02:16,631 and sound gets trapped in the first sheet of material 48 00:02:16,633 --> 00:02:18,898 on the outside of the weld nugget. 49 00:02:18,900 --> 00:02:20,865 This creates intermediate echoes 50 00:02:20,866 --> 00:02:23,465 between the properly spaced larger echoes 51 00:02:23,466 --> 00:02:25,131 in the ring down pattern. 52 00:02:25,133 --> 00:02:26,898 In the burnt condition 53 00:02:26,900 --> 00:02:28,898 the welding process has been applied 54 00:02:28,900 --> 00:02:30,998 too long on the sheets of material. 55 00:02:31,000 --> 00:02:34,265 This causes the welded area to become brittle 56 00:02:34,266 --> 00:02:37,665 and attenuation is much faster than in the good weld condition. 57 00:02:37,666 --> 00:02:41,198 This can also cause thinning of the overall lay-up 58 00:02:41,200 --> 00:02:43,065 of the two sheets of material. 59 00:02:43,066 --> 00:02:45,598 With all of these weld conditions and potentially 60 00:02:45,600 --> 00:02:48,531 more required to complete a full inspection, 61 00:02:48,533 --> 00:02:51,831 you can see how Template Storage can be very useful for an operator. 62 00:02:51,833 --> 00:02:54,198 While Template Storage lends itself very well 63 00:02:54,200 --> 00:02:56,631 to automotive spot weld inspection, 64 00:02:56,633 --> 00:02:59,665 it's usefulness can be applied to nearly all of ultrasonics. 65 00:02:59,666 --> 00:03:03,898 For more information on the Epoch 600 and the Template Storage feature, 66 00:03:03,900 --> 00:03:13,800 please visit our website at www.olympus-ims.com.