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我国已研制成数种液动冲击器，并在地质勘探部门中应用，总进尺达50多万m，其经济效益表现为钻速提高15～70％，钻头寿命延长30％，回次长度增加25％，成本降低15～20％。但是对于冲击器冲击能量（冲击功）的测定，近几年虽然研究了许多方法，其中包括高速摄影以及用位移和速度传感器求算冲击功，这些方法精度低，故障率高，甚至破坏了冲击器的工作状态，不能为深入研究和设计冲击器提供可靠的数据，这是一个急待解决的问题。近年来，国际上已采用应力波法测试冲击器能量，根据国际标准建议草案，ISO/DP 2778我们研制了一套用应力波法测试
Our country has developed several kinds of hydraulic impactors and applied it in the geological exploration department. The total footage has reached more than 500,000 m. Its economic performance is that the drilling speed is increased by 15 to 70%, the bit life is extended by 30%, and the length of the return is increased. 25%, cost reduction of 15 to 20%. However, in the determination of the impact energy (impact energy) of the impactor, although many methods have been studied in recent years, including high-speed photography and the use of displacement and velocity sensors to calculate the impact energy, these methods have low accuracy, high failure rate, and even destroy the impact. The working state of the device cannot provide reliable data for further research and design of the impactor, which is an urgent problem to be solved. In recent years, the stress wave method has been used to test the energy of impactors internationally. According to the draft international standard proposal, ISO/DP 2778, we have developed a set of tests using the stress wave method.