The invention discloses a test method for needle sensitivity of mechanical initiating explosive devices. In this method, the sample of mechanical initiating explosive device with standard pin is placed at the sample position of the separated Hopkinson pressure bar device, and the incident wave is generated by the bullet impacting the input bar. When the stress wave in the input bar reaches the contact surface of the initiating explosive sample, because of the mismatch of wave impedance, one part of the stress wave is reflected, forming a reflection wave; the other part enters the initiating explosive device and is shaped in the output bar. Transmitted wave. When the energy used on the initiating device reaches the ignition threshold, the initiating device acts (burns or explodes). The curves of incident wave and reflected wave can be obtained on the input rod, and the ignition point of initiating explosive device can be obtained on the output rod. According to the measured incident wave energy and reflected wave energy, the ignition energy consumed in the initiating explosive device can be calculated. The firing energy is less affected by other factors and has the significance of absolute needling sensitivity. The invention realizes the measurement and detection of needle sensitivity of a single mechanical initiating explosive device.
【技术实现步骤摘要】
一种机械火工品针刺感度测试方法
本专利技术涉及火工品感度检测技术方法,特别涉及机械火工品针刺感度的测试方法。
技术介绍
火工品(initiatingexplosivedevices),又称火具,在战略导弹、核武器及航空航天系统、常规弹药等军事工程中广泛应用。火工品质量是否达到规定标准,必须对其安全性和可靠性进行试验及数据分析才能进行验证或评估。而火工品感度是其安全性和可靠性的重要指标,目前,对于机械火工品针刺感度,只能是用落锤仪或落球仪检测单个火工品在一定冲击能量下是否发火,通过大批量火工品得到发火率曲线,以此作为判断该批火工品的感度标准;且该发火率曲线受到起始试验点和试验步长的影响。可见,这种试验方法需要样本量大、工作强度高,无法得到具有绝对数值意义的发火感度,尤其是不能得到单个火工品的针刺感度量值。
技术实现思路
本专利技术的目的是为了克服现有测量机械火工品针刺感度试验方法存在的问题,提供一种能够测量单个机械火工品针刺感度的方法。本专利技术测量机械火工品针刺感度的方法,其原理是对火工品试样施加可控的矩形脉冲载荷,直至火工品发火,测量输入的总能量和反射的能量,两者之 ...
【技术保护点】
1.一种机械火工品针刺感度测试方法,对带有标准击针的机械火工品试样施加矩形脉冲载荷,直至火工品发火,测量输入总能量和反射能量,根据能量守恒定律,两者之差即为作用于火工品上的发火能量,即针刺感度。其特征在于,采用可控制、可测量的矩形脉冲载荷作为加载方式。
【技术特征摘要】
1.一种机械火工品针刺感度测试方法,对带有标准击针的机械火工品试样施加矩形脉冲载荷,直至火工品发火,测量输入总能量和反射能量,根据能量守恒定律,两者之差即为作用于火工品上的发火能量,即针刺感度。其特征在于,采用可控制、可测量的矩形脉冲载荷作为加载...
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