PSI - Issue 47

Saud Alsaghir et al. / Procedia Structural Integrity 47 (2023) 437–447 Saud Alsaghir/ Structural Integrity Procedia 00 (2023) 000 – 000

446 10

significant difference in the wear factor. On the other hand, combining both the sliding and rotational motion, P110 and sm2535-110 are having a slight difference in the wear factor measurements as shown in Figure (8). Therefore, P110's wear resistance is much better than sm2534-110 under rotational motion only, but, under combined rotational and sliding motion, P110's wear resistance is comparable to sm2535. Therefore, after applying the sliding motion, both P110 and L80 wear factors increased significantly, while sm2535 110 slightly increased. Although P110 and L80 are having higher carbon compositions than sm2535-110, under the combined motions, the calculated wear factor for the three materials is comparable. In general, applying the sliding motion has increased the wear factor for the three types of materials as illustrated in Figure (8). The sliding motion increases the sliding distance as shown in equation (2); hence, the wear factor should decrease but it can be noticed that the wear factor significantly increased in the experimental results. The possible explanation is that the sliding motion results in friction contact in both directions which are axial and normal to the tool joint which increases the removed volume for all three types of materials.

Ϭ Ϯ͘ϱ ŵŵͬ Ɛ

ϭ ϭϬ ϭϬϬ ϭϬϬϬ ϭϬϬϬϬ tĞĂƌ &ĂĐƚŽƌ ;ϭϬ Ͳϵ DWĂ Ͳϭ Ϳ

Ϭ Ϯ͘ϱ ŵŵͬ Ɛ

ϭ tĞĂƌ &ĂĐƚŽƌ ;ϭϬ Ͳϵ DWĂ Ͳϭ Ϳ ϭϬ ϭϬϬ ϭϬϬϬ ϭϬϬϬϬ

Ϯ͘ϱ ŵŵͬ Ɛ

Ϯ͘ϱ ŵŵͬ Ɛ

Ϭ

Ϭ

ϭϬϬϬE ϭϰϬϬE

ϭϬϬϬE

ϭϰϬϬE

a) P110

b) L80

Ϭ Ϯ͘ϱ ŵŵͬ Ɛ

ϭ tĞĂƌ &ĂĐƚŽƌ ;ϭϬ Ͳϵ DWĂ Ͳϭ Ϳ ϭϬ ϭϬϬ ϭϬϬϬ ϭϬϬϬϬ

Ϯ͘ϱ ŵŵͬ Ɛ

Ϭ

ϭϬϬϬE

ϭϰϬϬE

c) sm2535-110 Figure 8. Wear factor (k) of the samples under rotational and combined motions; a) P110 Casing. b) L80 Casing. c) sm2535-110 Casings