落锤

随着科学技术的进步，预制桩施工机械由落锤、汽锤、柴油锤，发展到了液压打桩锤。

With the development of science and technology , the prefabricated pile driving machines evolve from block hammer , steam-hammer , diesel hammer to hydraulic hammer .

PVC异型材断面结构对低温落锤的影响

Effect of Low-temperature Falling Ball Test on Section Structure of PVC Profile Shapes

对刘国东等提出的BP（误差反向传播）神经网络归一化模型进行了改进，得到了适合钢轨交流闪光焊落锤质量预测的BP神经网络归一化模型。

An improved back propagation ( BP ) neural networks model was proposed based on the presented by Liu Guo-dong .

TIG熔修对T型接头试样落锤试验结果的影响

Influence of TIG Weld Dressing on Drop-weight Test Result of T-joints

橡胶对HIPS树脂落锤指标的影响

The Effects of Rubber on Drop Hammer Target of HIPS Resin

PVC型材低温落锤破裂影响因素的分析

Study on the influence factor of falling ball impact test of PVC window & door profile at low temperature

落锤试验试样厚度尺寸效应对T（NDT）的影响

Influence of Thickness on T_ ( NDT ) of Drop-weight Specimen

质量跟踪结果表明，HIPS落锤冲击强度明显改善。

The results of quality control show the falling dart of HIPS improve remarkable .

介绍落锤冲击试验方法，列举ABS板材和PVC硬质塑料板材的试验实例和计算。

The paper introduces the method of drop impact test and cites the test examples and calculation for ABS and PVC rigid plastics plates .

HIPS性能与橡胶粒子结构的关联及落锤冲击断裂的增韧机理

Influence of the Microstructure of the Rubber Particles on the Properties and Alterable Falling Dart Impact Fracture Mechanism of HIPS

落锤式弯沉仪（FWD）路面结构性能评价系统

Evaluation System of Pavement Structure Performance by Falling Weight Deflectometer

从控制PVC异型材挤出机的工艺参数的角度，分析并论述了挤出机工艺参数对PVC异型材低温落锤性能的影响。

Through controling the process parameter of PVC extruction profile , affect of process parameter on impact intest in low temperature was analysed and discussed in this paper .

铁棒锤A.12t落锤试验台

12t Drop hammer test machine

落锤式弯沉仪（FWD）在老路改造工程中的应用研究

Application of FWD in Old Road Rebuilding

FATT可由落锤撕裂试验测定。

And FATT can be measured by drop weighted tear tests .

本文通过大量的室内外试验研究与分析，探讨了一种路基回弹模量的快速检测方法&便携式落锤弯沉仪（PFWD：PortableFallingWeightDeflectometer）法。

Through a great deal of indoor and outdoor testing , a rapid method with Portable Falling Weight Deflectometer ( PFWD ) to test subgrade resilient modulus is studied .

最近，为了给新开的巴诺书店（Barnes&Noblebookstore）让路，城里硕果仅存的精美艺术品零售大楼在破碎机的落锤下倒塌。

Recently the finest remaining art deco retail building in town fell to the wrecking ball to make room for a new Barnes & Noble bookstore .

通过对测试结果的分析，作者对落锤法测定PDC抗冲击韧性的各种影响因素归纳出三点看法。

Three viewpoints concerned about various influencing factors of measuring impact toughness of PDC with dropping hammer method were summarized by analysis of the testing result .

工程车辆FOPS冲击试验中落锤塑性变形研究

Study of drop hammer plastic deformation at engineering vehicle FOPS impact test

此外，落锤试验还表明：该钢的零塑性转变温度NDT即为Tc＊，d。

Moreover , the drop weight test of the steel showed that the nil ductility transition temperature ( NDTT ) is in fact the very temperature Tc , d.

落锤式弯沉仪（FWD）在路基和柔性路面强度评定中的应用

The Application of the Falling Weight Deflectometer ( FWD ) in Strength Evaluation of the Subgrade and Flexible Pavement

本文以冲落式坐便器为研究对象，建立采用CFD软件进行冲落式坐便器冲水过程数值模拟的方法。落锤式水泥路面破碎机

Firstly , based on the physical model of the flush process of wash-down toilets , the CFD software FLUENT is selected and the simulation scheme is developed . Drop Hammer Concrete Crusher

射频LDMOS的击穿电压与静电保护复合材料静压痕与落锤冲击初始损伤对比试验

Breakdown Voltage and ESD Protection of RF-LDMOS ; Comparison between quasi-static indentation testing and drop-weight impact testing on delamination onset damage

落锤式水泥路面破碎机12t落锤试验台

Drop Hammer Concrete Crusher 12t Drop hammer test machine

考虑到其结构强度可能会受到影响，于是采用落锤式弯沉仪FWD对路面结构强度进行了检测。

Taking into account the strength of its structure may be affected , then using FWD deflection measured road structural strength .

本文简要介绍高抗冲型聚苯乙烯（HIPS）的生产工艺，分析影响HIPS落锤冲击强度的因素，提出了提高并稳定落锤冲击强度的有效措施。

Here Inducing briefly the production process of high impact polystyrene resin , analyzing the effect factors of falling dart and expounding the available steps to stabilize the falling dart .

本文通过对影响PVC-U门、窗框异型材低温落锤冲击性能主要因素的分析，提出了相应的控制措施。

After analyzing the major causation to falling impact performance of PVC-U plastic profile at low temperature , point out the means to control .

利用INSTRON实验机和落锤装置对圆筒形碳纤维增强环氧树脂基复合材料结构进行了静、动态压缩实验。

Cylinder structure of carbon fiber reinforced epoxy resin matrix composite material is compressed by INSTRON and drop weight experimental equipment .

介绍了利用落锤冲击试验来定性与定量评价UPVC型材冲击性能的方法及其应用。

This article introduces ways of falling ball experiment in low temperature to qualitatively and numerically evaluating the impact characters of UPVC profile .

落锤撕裂试验（DWTT）作为一种比较可靠的高强度高韧性管线钢的断裂判据，简单可靠。

It is simple and reliable that DWTT result judge high stress and high toughness pipeline .