PSI - Issue 22

L. Sena et al. / Procedia Structural Integrity 22 (2019) 171–180 175 Lígia T. Silva, Bruno Mendes, Carlos Oliveira, Cristina Reis, Paula Silva; José Silva / First International Symposium on Risk and Safety of Complex Structures and Components (2019), Porto, Portugal

1% 2% 3%

1.35

1.20

1.05

0.45 Perda Mássica (x10 -3 kg) 0.60 0.75 0.90

0.30

50 100 150 200 250 300 350 400 450

Tempo de Imersão (x10 3 segundos)

Fig. 1. Mass loss values by immersion time at room temperature for the various dilutions tested.

Imersão durante 21.600 segundos Imersão durante 43.200 segundos

5.0

4.5

4.0

2.5 Perda Mássica (x10 -3 kg) 3.0 3.5

2.0

1.5

320

330

340

350

360

370

Temperatura ( K)

Fig. 2. Mass loss values, in 3% of acid, for increasing temperature and two duration times .