ANGULO DE CHARPY PDF
Houve melhora para as medidas referentes ao ângulo de Charpy (p&61;0,), CI (p&61;0,), PFE (0,), PIM (0,), CrA (p&61;0,) e CrX (p& 22 nov. Charpy (entaille en U) ISO/R – Acier-Essai de résilience Charpy . 4 NBR / α = ângulo de suspensão do pêndulo β = ângulo. ângulo de Charpy, alinhamento horizontal da cabeça (AHC), lordose cervical ( LC), .. er the Charpy angle (15), the more horizontal the ribs. In.
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The present invention is encompassed within the field of tests using a pendulum impact on a specimen. Specifically, the impact device consists of a pendulum with a system of variable weights are placed in different positions of the arm to provide greater flexibility to the system as to df impact energies that can be set.
Said device is provided with a braking system which controls the height of the impact once defined the energy ed with which will impact and similarly this braking system avoids rebound after impact. In the state of the art impact devices pendulum they are mainly used for destructive testing. Pendulums are characterizations of materials for the Charpy method where the resistance is measured at break of a specimen when impacted using a pendulum with a hammer on the end.
anghlo The hammer is intrumentalizado and the device has a data acquisition system. The prior art as represented several inventions, among which are the following: Patent ES in which a pendulum for testing having a modular configuration, an arm operated by a reducer and characterized motor described because its operation is carried out by operation of an electromagnet that releases the mass disposed at the end of the arm.
The utility model has a Charpy pendulum whose main characteristic is the support plate which actuators pendulum support. This plate is required due to the large dimensions of the pendulum. In any case, this and other devices hcarpy not adequately solve the problems associated with the location of the specimen when the part to be evaluated is large or problems regarding the use of different types of arms and different body types to determine the most appropriate inertia.
To solve this and other problems has developed the pendulum impactor of the invention. It is an object of the invention to establish different test parameters depending on the type of material and the notch of the hammer, providing the pendulum of a single arm adapted for the mass of the recess can be moved by it and located in different positions.
ES2473666B1 – Pendulum device for testing low energy impact – Google Patents
It is another object of the invention is that the brake tire, are available around the axis and its instantaneous actuation input better yields to impact and avoid rebound anguloo after the blow with the specimen. It is another object of the invention that the pendulum is provided on a base that is adaptable to any arrangement, either horizontal, vertical, inclined or even on the same specimen.
The brake comprises two brake discs attached to the shaft and two pneumatic grippers.
The pneumatic system is lower consumption and a smaller electric braking system. Are arranged Tong anchored in the wings of the bed to leave the base of free bed and can easily be tied to any surface.
In relation to the arm and the mass, the mass is displaced and fixed along the arm as the impact energy needed. The dough is anuglo joined to the arm via a chwrpy bolt passing through both.
De esta manera se consigue angluo el movimiento de ambos elementos sea solidario. Thus it is achieved that the movement of both elements is integral. Sobre la masa va xngulo la entalla: Is screwed on the mass notch: The bank has a design that allows installation anywhere: Other similar systems studied to date are designed for impact on specimens or specimens of small size that are placed on the pendulum device itself.
En este caso se trata de resolver la necesidad de ampliar el rango y el tipo de In this case it comes to solving the need to expand hcarpy range and type of. From airplane wings, boats etc. The advantages of the device of the invention are: The test set different parameters depending on the type of material through the use of different masses which can be fixed in different positions, allowing in a simple change of the inertia of the pendulum.
The flexibility in use, with easy adaptation to different places set, to be a portable device. Adaptability to any test site for the use of an efficient air braking system. It then goes on to describe very briefly a series angilo drawings which aid in better understanding the invention and which are expressly related to an embodiment of said invention presented as a non-limiting example thereof.
Figure 1 shows a perspective view of the embodiment of the invention. Figure 2 shows another view of the invention to provide a complete dr of it, showing the elements that are not clearly seen in Figure 1. Figures 3 and 4 chzrpy examples of system junction impacts on a test bench. The joint system of the bed is set based on the specimen to impact.
At the ends of said bed 1 the wings of the bed 2 where the axis of rotation 3 and the brake calipers 4 is mounted are arranged. The assembly of the wings 2 takes up very cahrpy surface of the bed 1being free most of the ahgulo. Los discos de freno 5 se soportan sobre el eje 3 y se disponen junto a las alas 2 de la bancada.
Brake disks 5 are supported on the shaft 3 and arranged with wings 2 of the bed. Also on the axis of rotation chrpy the arm 6 ending in char;y mass 7 constituting all the pendulum is fixed. Binding arm 6 with the axis 3 is consolidated with oblique supports 8 and the corresponding part of the shaft 3 at its junction with the arm 6 and two oblique supports 8 changes anghlo cylindrical design for a rectangular design where the connecting points 9 are established.
El brazo 6 tiene agujeros 10 en su superficie marcando las diferentes posiciones en las The arm 6 has holes 10 on its surface marking the different positions in the. The different positions can take the mass 7 increase system chary because different impact energies are achieved by moving the mass 7. The tip of the impactor 11 is an interchangeable tip that binds to the mass 7 by a threaded connection.
The angle transducer 12 to the shaft 3 is also connected on the outside thereof and measures the angle that rotates the pendulum.
The grippers 4 are supported only in the wings charyp without resting on the bed 1 leaving the maximum area with free access. The method of using the aforementioned pendulum device solves the problems that may arise in the execution of all types of impacts with this device.
The method followed for use is as follows: The angle of the surface on which is to impact measured with an inclinometer. This angle can be any: The impact energy to be performed on the specimen. Esta es una de las This is one of charrpy. With the data of surface inclination and the angle of impact energy anfulo has to rise the device is calculated.
The software associated with the device automatically brakes the pendulum when it has reached the desired angle. Mediante un pulsador se libera el brazo y se ejecuta el impacto.
By a push arm is released and impact run. El control del sistema frena el dispositivo una vez ejecutado el impacto. Braking system control device once executed the impact. Se detecta cuando el giro del dw cambia de sentido tras el impacto. It is detected when the rotation of the device changes direction after impact. It also has angul security system to prevent damage to the specimen if the selected energy is too large.
If the angle exceeds the impact so that the bulk of the mass 7 can hit the specimen the brake is applied before this happens. The object of this device is to perform controlled in the specimen, in no case cause breakage or excessive damage to the damage. In Figures 3 a practical embodiment of the invention is shown wherein the device anchor in one of the columns of a portico.
Ensayo Charpy e Izod by Nikolas Espitia on Prezi
Figure 4 shows a second embodiment in which the device is fixed on the gantry structure itself is displayed. Country of ref document: Kind code of ref document: Pendulum device for testing low energy impacts the type used for characterization of materials by the Charpy method, characterized by having a control system which prevents recoil or rebound further damage on the desired material.
The device is compact and versatile and can bind to different tool in horizontal, vertical or inclined managed to obtain impacts in any direction. Consists of a bed 1 and wings 2 on both the axis of rotation 3 as the pliers 4 of the brake, an arm 6 having through holes 10 and a mass supported 7 sliding through the arm 6 and fixed on it, and finally an interchangeable impactor 11 is screwed into the mass 7.
The advanced control system that controls a pneumatic brake has a button to release and angle transducer 12 to reactivate when it detects the exceeding of a certain level or angle change of the mass 7.
Device for pendulum impact test low energy type anguol for validations materials Charpy method including a bed on which wings housing the rotation axis arm system is yerguen braking, characterized in that: Device pendulum impact test low energy according to the first claim, characterized by having a pushbutton to release the air brake and control system to activate when the angle transducer 12 detects that exceeds a certain level or a change of angle of the mass 7 occurs.
Device pendulum impact test low energy according to the dee claim, characterized in that the axis of rotation 3 is cylindrical in the portion corresponding to the wings 2 and brake abgulo 5 and transitions a rectangular binding arm 6 and support points 8 which reinforce said arm 6. Device pendulum impact test low energy according to the first claim, characterized in that the arm 6 and mass 7 are joined by a pin and the mass 7 has an impactor 11 interchangeably by screwing the tip.
Device pendulum impact test df energy according to the first anguloo, characterized in that the various means for fixing the bed 1 outside the wings 2magnetic media, based clamps or screw connectionsallow.
EP EPA1 en One kind of pendulum lever Huobujinsen Strain Rate Test device and method loading. Wind tunnel test method to study out-of-service tower crane behaviour in storm winds. Impact pendulum-type testing machine for testing samples of materials with cahrpy impacts. ES Kind code of ref document: