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“The nonlinear approach means that you can actually hear something from them, you're listening to different effects, rather than listening for just that echo from the crack," he said.
“非线性方法意味着你能听到一些回声，能听到不同的效果，而不是只听到从裂纹发出的回声。”
Using an array of attached sensors, Croxford is testing a seemingly perfect part of a wing from an Airbus A320. A linear system would not be able to discover cracks forming around the rivet holes, because a hole would create one big echo.
使用一组连接起来的感应器，柯瑞福对一架空客A320机翼上一段看似完美无瑕的地方进行测试，线性系统不能发现铆钉孔周围的裂纹，因为这种孔能制造出巨大的回音。
“By using this novel approach we can now pick up a crack close to a hole, which is directly relevant, to say, aerospace applications, where they're worried about cracks growing from rivet holes, things like that," said Croxford.
“使用新的方法，我们现在就能找到孔周围的裂纹，这与航空上的应用直接有关，比如人们担心铆钉孔周围有裂纹时，如此等等。”
Croxford says the phased array system uses only one piece of equipment to get both a nonlinear and linear image.
柯瑞福说这种相控阵系统只是用一种设备就能同时得到非线性和线性图像。
The technology could allow inspectors to get more accurate assessments of damage in materials such as crucial aircraft parts, so they can be replaced before they fail.
这种技术能让检查员对飞机上关键部位等材料上的破损做出更精确的评估，这样就能在出问题之前进行替换
